RA 21 050/06.98
2-way cartridge valves – pressure functions
Cartridge valves model LC...
Control covers model LFA...
Sizes 16 to 100 up to 6,091 PSI (420 bar) up to 1,849 GPM (7,000 L/min)
RA
21 050/06.98
Replaces: 81 078
K 3786/6
H/A 5453/96
H/A 5454/96
Control cover with manual pressure adjustment
model LFA .. DBW ...
Cartridge valve model LC ..DB...-7X/…
Cartridge valve model LC ..DR...-7X/…
Contents
Description
Page
– General
2
– Pressure relief function
2
– Pressure reducing function
– Pressure sequencing function
Cavity and porting pattern to DIN 24 342
2; 3
3
4
Pressure relief function:
5
5
5... 11
12
12
– Control cover model LFA..DB...
• Ordering details (general)
• Technical data
• Pilot valve
• Symbols (basic symbols)
• R-rings for the pilot oil connections
• Seal kits
• Mounting bolts
• Orifice dimensions
• Ordering details, symbols and unit dimensions:
Model ..DB...
Models ..DBW...; ..DBS...
Model ..DBWD...
Model ..DBU2...
Model ..DBU3D...
Model ..DBE(TR)...
Model ..DBEM(TR)...
Page
– Cartridge valve model LC..DR...
• Ordering details
• Symbols
• Technical data, characteristic curves
• Compression springs
• Seal kits
43
43
43 ... 46
47
47
– Control cover model LFA..DR...
– Cartridge valve model LC..DB...
• Ordering details
• Symbols
• Technical data, characteristic curves
• Compression springs
• Seal kits
Description
Pressure reducing function:
Functional description:
13
14
14; 15
16
17
17
17
17
18 ... 20
21 ... 25
26 ... 28
29 ... 32
33 ... 37
38, 39
39 ... 42
• Ordering details (general)
• Technical data
• Pilot valve
• Symbols (basic symbols)
• R-rings for the pilot oil connections
• Mounting bolts
• General dimensions
• Ordering details, symbols and unit dimensions:
Model ..DR...
Model ..DRW...
Models ..DREV...; DREZ
Models ..DREWV...; DREWZ
48
49
49
50
51
51
52
53; 54
55; 56
57; 58
59; 60
Pressure sequencing function:
– Control cover model LFA..DZ...
• Ordering details (general)
• Symbols (basic symbols)
• Technical data
• R-rings for the pilot oil connections
• Seal kits
• Mounting bolts
• Orifice dimensions
• Ordering details, symbols and unit dimensions:
Model ..DZ...
Model ..DZW...
61
61
62
62
62
62
62
63; 64
65; 66
1/66
RA 21 050/06.98
Functional description
General
2-way cartridge valves for pressure control are pilot operated
poppet or spool valves. The main component designed as a
cartridge valve (1) is inserted in a cavity bore corresponding to DIN
24 342 and sealed by control cover (2).
The pilot valve (4) for either manual or electrical proportional
pressure control, is integrated into the control cover (2) or mounted
onto the control cover as a pilot valve with interface connections
to DIN 24 340 [D03, D05] (2).
2
5
4
By combining the cartridge valve with the control covers, various
pressure functions can be achieved.
6
B
1
3
A
LC..DB.. D 7X ...
LC..DB.. E 7X ...
Pressure relief function
Control cover: LFA..DB...
Cartridge valve: LC..DB...
The cartridge valve (1) for the pressure relief function (model LC..
DB..) is a poppet valve with no area differential (no effective area
at port B). The pilot signal at port A is fed via pilot oil orifice (5) to
the spring side (6) of the element. At pressures below the setting
of pilot valve (4) forces on cartridge element (3) are balanced and
the spool remains closed, due to the biasing spring force. Upon
reaching the set pressure, cartridge element (3) opens and limits
the pressure at port A to the corresponding valve pressure/flow
characteristics.
Pressure Relief
X**
Model LFA .. DB ...
F**
X
Y
B
Model LC .. DB ...
A
Pressure reducing function
a) Normally open:
Control cover:
LFA..DB...
Cartrdige valve: LC..DR...
The cartridge valve for the pressure reducing function is a spool
valve with no area differential (no effective area at port B).
Pressure Reducing:
– Normally Open
The same cover models are used as above for the pressure relief
functions (model LFA.. DB..).
The pilot signal at port A is fed to the spring side of the cartridge
element via the pilot oil supply orifice. Below the performance limit
and pressure set at the pilot valve, the cartridge element is
pressure balanced and is held open by the spring force, so that oil
is free to flow from port B to port A.
Upon reaching the set pressure, the cartridge element closes and
limits the pressure at port A to the corresponding valve pressure/
flow characteristics.
2/66
X**
e.g.
Model LFA .. DB ...
F**
Y
X
B
A
Model LC .. DR 40 ...
RA 21 050/06.98
Functional description (continued)
b) Normally closed:
Pressure reducing:
– Normally Closed
Control cover: LFA..DR...
Cartrdige valve: LC...DB40D...
For the normally closed pressure reducing function, a pressure
relief valve cartridge (model LC.. DB40D...) and a control cover
with a pressure reducing valve (model LFA.. DR..) as the pilot
valve are used. Pilot oil is fed from port A to the top of the control
element via orifices (X) and (F). The pilot signal passes through the
normally open reducing valve pilot into port B via orifice (Y).
The main spool opens and allows free flow form port A to port B.
M
e.g.
Model LFA.. DR...
Model LC.. DB40D...
Y**
F**
X**
X
B
Upon reaching set pressure, the cartridge element closes and
limits the pressure at port B to the corresponding valve pressure/
flow characteristics. Possible pressure spikes on the secondary
side (B) are led away to tank via the third port of the pilot valve. By
fitting a directional valve, an additional isolating function can also
be attained (model LFA ...DRW...).
Z2 Y
A
Pressure sequencing function
Control cover: LFA..DZ...
Cartridge valve: LC..DB...
This function enables a pressure-dependent sequencing of a
branch circuit.
The required sequencing pressure is set by the pilot valve,
integrated into the control cover.
The pilot oil supply may be either external (pilot oil port X) or
internal (from port A via pilot oil port X or Z2).
The spring chamber of the pilot control is drained to tank via ports
Y or Z1.
When the pressure setting of the pilot spring is reached, the pilot
valve switches and unloads the spring chamber of the main valve
to tank. The main cartridge element opens connecting ports A to
B.
In model LFA.. DZW..., the required cartridge element position
may be controlled by means of an electrically operated pilot valve
(additionally ordered with control cover LFA..DZW..).
Example 1:
Circuit for pressure
dependent unloading of
a low pressure system
Typical circuits
Example 1:
In the circuit shown, the system is fed by a high pressure pump and
a low pressure pump. The system pressure pS acts externally from
the high pressure side via pilot oil port X on the pilot valve. Upon
reaching set pressure, the low pressure pump is unloaded to
provide low pressure circulation. The check valve RV (not included
within the scope of supply) prevents the high pressure system from
flowing into the low pressure system.
Ps
Z2
X
Y
Z1
B
RV
A
e.g.
Model LFA.. DZ.../..XY
Model LC.. DB20D...
Low
PSI
High
PSI
Example 2:
Pressure dependent
sequencing of a second
system
Example 2:
With this circuit, oil is allowed to flow into system 2 when the
pressure in system 1 has reached a pre-set value. The pilot oil
supply is internal from connection A of the main valve.
X
Z2
Z1
B
system 2
Y
A
LFA.DZ.../...Y
LC..DB20D...
system 1
3/66
RA 21 050/06.98
Installation cavity and porting pattern to DIN 24 342 (DIN ISO 73568): dimensions in inches (millimeters)
W
z
y
ØD3(D3*)
H9
z
°
15
H6
B
4
x
0.002 (0.05) A
y
ØD4H7
ØD7H13
H1
z
=
Rmax4
(ØD3*)
ØD6 1)
1
ØD4H7
ØD3
ØD5
H5
A
ØD2
=
H3±0.004 (0.1)
ØD2
y
H1(H1*)
x
3 2
Size
ØD1H7
A
H7
°
15
H8
1
ØD1H7
H2+0.004 (0.1)
T
=
Rmax8
Rz10
(H1*)
H2
Sizes 16 to 63
6
H3
L1
L2±0.0079 (±0.2)
H4
L5±0.0079 (±0.2)
4xD5; H4†
H5
L3±0.0079 (±0.2)
Z1
Y
X
H6
L2±0.0079 (±0.2)
L1
5
L4±0.0079 (±0.2) L4±0.0079 (±0.2)
ØD7H13;
0.39 (10)
Z2
H7
H8
ØD6 max.
(X,Y,Z1,Z2)
L4±0.0079 (±0.2) L4±0.0079 (±0.2)
H9
L1
L2
Sizes 80, 100
35°
ØD7H13;
0.39 (10)
L5
W
L1
Y
X
L2±0.0118 (±0.3)
Z1
8xD5; H4†
ØD6 max.
(X,Y,Z1,Z2)
L4
4
5°
5
L3
22.5°
16
1.26
(32)
0.63
(16)
0.63
(16)
0.98
(25)
0.98
(25)
M8
5/16"
0.158
(4)
0.158
(4)
1.34
(34)
1.16
(29.5)
2.21
(56)
1.69
(43)
0.787
(20)
0.433
(11)
0.079
(2)
0.787
(20)
0.079
(2)
0.0197
(0.5)
2.56/3.15
(65/80)
1.81
(46)
0.91
(23)
0.98
(25)
0.41
(10.5)
0.002
(0.05)
25
32
1.77
2.36
(45)
(60)
0.98
1.26
(25)
(32)
0.98
1.26
(25)
(32)
1.26
1.58
(32)
(40)
1.34
1.77
(34)
(45)
M12
M16
1/2"
5/8"
0.236 0.315
(6)
(8)
0.236 0.236
(6)
(6)
1.73
2.05
(44)
(52)
1.6
1.89
(40.5)
(48)
2.84
3.35
(72)
(85)
2.28
2.76
(58)
(70)
0.98
1.38
(25)
(35)
0.472 0.512
(12)
(13)
0.1
0.1
(2.5)
(2.5)
1.18
1.18
(30)
(30)
0.1
0.1
(2.5)
(2.5)
0.039 0.059
(1)
(1.5)
3.35
4.02
(85)
(102)
2.28
2.76
(58)
(70)
1.14
1.38
(29)
(35)
1.3
1.61
(33)
(41)
0.63
0.67
(16)
(17)
0.002 0.0039
(0.05) (0.1)
40
2.95
(75)
1.58
(40)
1.58
(40)
1.97
(50)
2.17
(55)
M20
3/4"
0.39
(10)
0.236
(6)
2.52
(64)
2.32
(59)
4.13
(105)
3.43
(87)
1.77
(45)
0.591
(15)
0.118
(3)
1.18
(30)
0.118
(3)
0.098
(2.5)
4.92
(125)
3.35
(85)
1.67
(42.5)
1.97
(50)
0.91
(23)
0.0039
(0.1)
50
3.54
(90)
1.97
(50)
1.97
(50)
2.48
(63)
2.68
(68)
M20
3/4"
0.39
(10)
0.315
(8)
2.84
(72)
2.58
(65.5)
4.8
(122)
3.94
(100)
1.77
(45)
0.669
(17)
0.118
(3)
1.38
(35)
0.158
(4)
0.098
(2.5)
5.51
(140)
3.94
(100)
1.97
(50)
2.28
(58)
1.18
(30)
0.0039
(0.1)
63
80
100
4.72
5.71
7.09
(120)
(145)
(180)
2.48
3.15
3.94
(63)
(80)
(100)
2.48
3.15
3.94
(63)
(80)
(100)
3.15
3.94
4.92
(80)
(100)
(125)
3.54
4.33
5.32
(90)
(110)
(135)
M30
M24
M30
1-1/4"
1"
1-1/4"
0.47
0.63
0.787
(12)
(16)
(20)
0.315
0.39
0.39
(8)
(10)
(10)
3.74
5.12
6.1
(95)
(130)
(155)
3.41
4.72
5.59
(86.5) (120)
(142)
6.1
8.07
9.65
(155)
(205)
(245)
5.12 6.89±0.0079 8.27±0.0079
(130) (175±0.2) (210±0.2)
2.56
1.97
2.48
(65)
(50)
(63)
0.787
0.98
1.14
(20)
(25)
(29)
0.158 0.197
0.197
(4)
(5)
(5)
1.58
1.58
1.97
(40)
(40)
(50)
0.158 0.197
0.197
(4)
(5)
(5)
0.118 0.177
0.177
(3)
(4.5)
(4.5)
7.09
9.84
11.8
(180)
(250)
(300)
4.92
7.87
9.65
(125)
(200)
(245)
2.46
–
–
(62.5)
–
–
2.95
–
–
(75)
–
–
1.5
–
–
(38)
–
–
0.0079 0.0079 0.0079
(0.2
(0.2)
(0.2)
1)
max. dimensions
†
For applications with UNC thread bolts, use inch value.
Z2
1 Depth of fit
2 Reference dimension
3 For other diameters of port B ØD3 or (ØD3*) the distance from
the cover surface to the center line of this hole must be calculated.
4 Port B may be moved about the central axis of port A.
Care must be taken to ensure that the mounting holes and
control holes are not damaged.
5 Drilling for location pin
6 Note on size 16 porting pattern: Length L1 (axis x–y drilling) is 3.15
inches (80 mm).
4/66
Size
ØD1H7
ØD4H7
ØD7H13
16
1.26+0.0010
0.98+0.0008
0.158+0.0071
25
1.77+0.0010
1.34+0.0010
0.236+0.0071
32
2.36+0.0012
1.77+0.0010
0.236+0.0071
40
2.95+0.0012
2.17+0.0012
0.236+0.0071
50
3.54+0.0014
2.68+0.0012
0.315+0.0087
63
4.72+0.0016
3.54+0.0014
0.315+0.0087
80
5.71+0.0016
4.33+0.0014
0.39+0.0087
100
7.09+0.0018
5.32+0.0016
0.39+0.0087
RA 21 050/06.98
Pressure relief function
Ordering code for pressure relief cartridge valves (without control cover)
LC
DB
Sizes 16 ... 100
No code =
V=
Size 16
= 16 Size 40
= 40
series
Size 25
= 25 Size 50
= 50
series
7X
Size 32
= 32 Size 63
= 63
6X
Size 80
= 80
Size 100
= 100
NBR seals
FPM seals
(other seals on request)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
6X =
Cracking pressure 0 PSI (0 bar) (without spring)
Cracking pressure 29 PSI (2.0 bar)
Cracking pressure 58 PSI (4.0 bar)
Cracking pressure 72.5 PSI (5.0 bar)
Cracking pressure 116 PSI (8.0 bar)
= 00
= 20 1)
= 40
= 50
= 80
Sizes 40 to 100
Series 60 to 69
(60 to 69: unchanged installation and
connection dimensions)
Sizes 16 to 32
Series 70 to 79
(70 to 79: unchanged installation and
connection dimensions)
7X =
1) Cracking pressure 29 PSI (2.0 bar) for size 16 if
applying a DBC.-5X/…SO 187 (data sheet RA 25 802)
}
E = Poppet valve
Standard model
D = Poppet spool valve
A = Poppet valve with orifice
B = Poppet spool valve with orifice
Symbols for cartridge valves (see ordering code for details)
Poppet valve
LC..DB..E...
Poppet valve with orifice
LC..DB..A...
B
Poppet spool valve
LC..DB..D...
B
B
A
Poppet spool valve with
orifice LC..DB..B...
B
A
A
A
Technical data (for applications outside these parameters, please consult us!)
Pressure fluid
1)
suitable for NBR and FPM seals
2) only suitable for FPM seals
Pressure fluid - temperature range
°F (°C)
Mineral oil (HL, HLP) to DIN 51 524 1);
Fast bio-degradable pressure fluids to
VDMA 24 568 (also see RA 90 221); HETG (rape seed oil) 1);
HEPG (polyglycol) 2); HEES (synthetic ester) 2);
other fluids on request
– 22 to + 176 (– 30 to + 80) (NBR seals)
– 4 to + 176 (– 20 to + 80) (FPM seals)
Viscosity range
Degree of fluid contamination
SUS (mm2/s)
35 to 1760 (2.8 to 380)
Maximum permissible degree of contamination of the fluid is to
NAS 1638 class 9. We, therefore, recommend a filter with a
minimum retention rate of ß10 ≥ 75.
2-way cartridge valve
Max. operating pressure at ports A and B
PSI (bar)
Nominal size
up to 6,092 (420)
16
25
32
40
50
63
80
100
Max. flow (recommendation)
Poppet valve insert LC..DB..E../.. LC..DB..A..
GPM (L/min)
79.3
(300)
118.9
(450)
158.5 264.2 422.7 660.4 1189 1849
(600) (1.000) (1.600) (2.500) (4.500) (7.000)
Spool valve insert
GPM (L/min)
46.2
(175)
79.3
(300)
118.9
(450)
LC..DB..D../.. LC..DB..B..
184.5 369.8 462.3 845.4 1294.4
(700) (1.400) (1.750) (3.200) (4.900)
5/66
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)
LC 16 DB...E7X
217
145
72.5
(15)
(10)
..DB40..
(5)
..DB20..
0
13.2
26.4
39.6
52.8
66
(50)
(100)
(150)
(200)
(250)
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
The curves were measured with an external pilot oil drain line at zero pressure. With an internal pilot oil drain the curves will
increase additive to the pressure existing at port B.
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
Flow in GPM (L/min) →
LC 16 DB...D7X
217
(15)
..DB40..
145
72.5
(10)
(5)
..DB20..
0
13.2
26.4
39.6
52.8
66
(50)
(100)
(150)
(200)
(250)
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
Lowest set pressure in
PSI (bar) →
72.5
(10)
(5)
..DB20..
0
13.2
26.4
39.6
52.8
66
(50)
(100)
(150)
(200)
(250)
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
(15)
..DB40..
145
72.5
(10)
(5)
0
..DB20..
13.2
26.4
39.6
52.8
66
(50)
(100)
(150)
(200)
(250)
Inlet pressure in PSI (bar) →
217
39.6
52.8
(50)
(100)
(150)
(200)
66
(250)
13.2
26.4
39.6
52.8
(50)
(100)
(150)
(200)
66
(250)
13.2
26.4
39.6
52.8
(50)
(100)
(150)
(200)
66
(250)
Flow in GPM (L/min) →
LC 16 DB...D7X
Flow in GPM (L/min) →
6/66
5,076
Flow in GPM (L/min) →
Lowest set pressure in
PSI (bar) →
Electrical proportional pressure adjustment LFA 16 DBE …7X/…
(15)
..DB40..
145
26.4
Flow in GPM (L/min) →
LC 16 DB...E7X
217
13.2
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
Manual pressure adjustment LFA 16
DB
...7X/…
DBW
Size 16
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
13.2
26.4
39.6
52.8
(50)
(100)
(150)
(200)
Flow in GPM (L/min) →
66
(250)
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)
LC 25 DB...E7X
217
145
72.5
(15)
(10)
..DB40..
(5)
..DB20..
0
26.4
52.8
79.3
105.7
(100)
(200)
(300)
(400)
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
The curves were measured with an external pilot oil drain line at zero pressure. With an internal pilot oil drain the
curves will increase additive to the pressure existing at port B.
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
Flow in GPM (L/min) →
LC 25 DB...D7X
217
145
72.5
(15)
..DB40..
(10)
(5)
..DB20..
0
26.4
52.8
79.3
105.7
(100)
(200)
(300)
(400)
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
..DB40..
72.5
(10)
(5)
..DB20..
26.4
52.8
79.3
105.7
(100)
(200)
(300)
(400)
Inlet pressure in PSI (bar) →
Lowest set pressure in
PSI (bar) →
(15)
0
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
(15)
..DB40..
145
(10)
..DB20..
72.5
(5)
0
26.4
52.8
79.3
105.7
(100)
(200)
(300)
(400)
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
LC 25 DB...D7X
217
79.3
105.7
(100)
(200)
(300)
(400)
26.4
52.8
79.3
105.7
(100)
(200)
(300)
(400)
26.4
52.8
79.3
105.7
(100)
(200)
(300)
(400)
Flow in GPM (L/min) →
Flow in GPM (L/min) →
Lowest set pressure in
PSI (bar) →
Electrical proportional pressure adjustment LFA 25 DBE …7X/…
LC 25 DB...E7X
145
52.8
Flow in GPM (L/min) →
Flow in GPM (L/min) →
217
26.4
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
Manual pressure adjustment LFA 25
DB
...7X/…
DBW
Size 25
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
26.4
52.8
79.3
105.7
(100)
(200)
(300)
(400)
Flow in GPM (L/min) →
7/66
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)
LC 32 DB...E7X
217
(15)
145
(10)
..DB40..
72.5
(5)
..DB20..
0
26.4
52.8
79.3
105.7
132
158.5
(100)
(200)
(300)
(400)
(500)
(600)
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
The curves were measured with an external pilot oil drain line at zero pressure. With an internal pilot oil drain the curves will
increase additive to the pressure existing at port B.
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
LC 32 DB...D7X
217
145
72.5
(15)
(10)
..DB40..
(5)
..DB20..
0
26.4
52.8
79.3
105.7
132
158.5
(100)
(200)
(300)
(400)
(500)
(600)
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
Lowest set pressure in
PSI (bar) →
(15)
(10)
..DB40..
72.5
(5)
0
..DB20..
26.4
52.8
79.3
105.7
132
158.5
(100)
(200)
(300)
(400)
(500)
(600)
(15)
..DB40..
145
72.5
(10)
(5)
0
..DB20..
26.4
52.8
79.3
105.7
132
158.5
(100)
(200)
(300)
(400)
(500)
(600)
Inlet pressure in PSI (bar) →
217
79.3
105.7
132
158.5
(100)
(200)
(300)
(400)
(500)
(600)
26.4
52.8
79.3
105.7
132
158.5
(100)
(200)
(300)
(400)
(500)
(600)
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
26.4
52.8
79.3
105.7
132
158.5
(100)
(200)
(300)
(400)
(500)
(600)
Flow in GPM (L/min) →
LC 32 DB...D7X
Flow in GPM (L/min) →
8/66
5,076
Flow in GPM (L/min) →
Lowest set pressure in
PSI (bar) →
Electrical proportional pressure adjustment LFA 32 DBE …7X/…
145
52.8
Flow in GPM (L/min) →
LC 32 DB...E7X
217
26.4
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
Flow in GPM (L/min) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
Manual pressure adjustment LFA 32
DB
...7X/…
DBW
Size 32
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
26.4
52.8
79.3
105.7
132
158.5
(100)
(200)
(300)
(400)
(500)
(600)
Flow in GPM (L/min) →
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm /s) and t = 122 °F (50°C)
2
LC 40 DB...E7X
290
218
145
(20)
(15)
(10)
..DB40..
72.5
(5)
..DB20..
0
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
The curves were measured with an external pilot oil drain line at zero pressure. With an internal pilot oil drain the
curves will increase additive to the pressure existing at port B.
52.8
105.7
158.5
211.3
264.2
(200)
(400)
(600)
(800)
(1,000)
5,076
(350)
4,351
(300)
3,626
(250)
2,900
(200)
2,176
(150)
1,450
(100)
725
(50)
0
LC 40 DB...D7X
290
(20)
218
(15)
145
(10)
..DB40..
72.5
(5)
..DB20..
0
52.8
105.7
158.5
211.3
264.2
(200)
(400)
(600)
(800)
(1,000)
5,076
(350)
4,351
(300)
3,626
(250)
2,900
(200)
2,176
(150)
1,450
(100)
725
(50)
0
..DB40..
145
72.5
(15)
..DB20..
(10)
(5)
Inlet pressure in PSI (bar) →
Lowest set pressure in
PSI (bar) →
(20)
0
52.8
105.7
158.5
211.3
264.2
(200)
(400)
(600)
(800)
(1,000)
5,076
(350)
4,351
(300)
3,626
(250)
2,900
(200)
2,176
(150)
1,450
(100)
725
(50)
0
Flow in GPM (L/min) →
(20)
..DB40..
218
(15)
145
(10)
72,5
(5)
0
..DB20..
52.8
105.7
158.5
211.3
264.2
(200)
(400)
(600)
(800)
(1,000)
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
290
158.5
(200)
(400)
(600)
211.3
(800)
264.2
(1,000)
52.8
105.7
158.5
(200)
(400)
(600)
211.3
(800)
264.2
(1,000)
52.8
105.7
158.5
(200)
(400)
(600)
211.3
(800)
264.2
(1,000)
Flow in GPM (L/min) →
LC 40 DB...D7X
Lowest set pressure in
PSI (bar) →
Electrical proportional pressure adjustment LFA 40 DBE …7X/…
LC 40 DB...E7X
218
105.7
Flow in GPM (L/min) →
Flow in GPM (L/min) →
290
52.8
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
Flow in GPM (L/min) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
Manual pressure adjustment LFA 40
DB
...7X/…
DBW
Size 40
5,076
(350)
4,351
(300)
3,626
(250)
2,900
(200)
2,176
(150)
1,450
(100)
725
(50)
0
52.8
105.7
158.5
(200)
(400)
(600)
211.3
(800)
264.2
(1,000)
Flow in GPM (L/min) →
9/66
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)
LC 50 DB...E7X
435
(30)
363
(25)
290
(20)
218
(15)
145
(10)
72.5
(5)
..DB40..
..DB20..
0
132
264
396
528
(500)
(1,000)
(1,500)
(2,000)
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
The curves were measured with an external pilot oil drain line at zero pressure. With an internal pilot oil drain the curves will
increase additive to the pressure existing at port B.
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
Flow in GPM (L/min) →
132
264
396
528
(500)
(1,000)
(1,500)
(2,000)
Flow in GPM (L/min) →
LC 50 DB...D7X
435
(30)
363
(25)
290
(20)
218
(15)
145
(10)
72.5
(5)
..DB40..
..DB20..
0
132
264
396
528
(500)
(1,000)
(1,500)
(2,000)
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
Manual pressure adjustment LFA 50
DB
...7X/…
DBW
Size 50
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
Flow in GPM (L/min) →
132
264
396
528
(500)
(1,000)
(1,500)
(2,000)
Flow in GPM (L/min) →
363
290
(30)
..DB40..
(25)
(20)
..DB20..
218
(15)
145
(10)
72.5
(5)
132
264
396
528
(500)
(1,000)
(1,500)
(2,000)
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
(30)
363
(25)
..DB40..
290
(20)
218
(15)
145
(10)
72.5
(5)
0
..DB20..
132
264
396
528
(500)
(1,000)
(1,500)
(2,000)
Inlet pressure in PSI (bar) →
LC 50 DB...D7X
435
132
264
396
528
(500)
(1,000)
(1,500)
(2,000)
Flow in GPM (L/min) →
Flow in GPM (L/min) →
Flow in GPM (L/min) →
10/66
Inlet pressure in PSI (bar) →
Lowest set pressure in
PSI (bar) →
435
0
Lowest set pressure in
PSI (bar) →
Electrical proportional pressure adjustment LFA 50 DBE …7X/…
LC 50 DB...E7X
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
132
264
396
528
(500)
(1,000)
(1,500)
(2,000)
Flow in GPM (L/min) →
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)
LC 63 DB...E7X
435
(30)
363
(25)
290
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
The curves were measured with an external pilot oil drain line at zero pressure. With an internal pilot oil drain the
curves will increase additive to the pressure existing at port B.
(20)
218
(15)
145
(10)
72.5
(5)
..DB40..
..DB20..
132
264
396
528
660
(500)
(1,000)
(1,500)
(2,000)
(2,500)
0
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
132
264
396
528
660
(500)
(1,000)
(1,500)
(2,000)
(2,500)
Flow in GPM (L/min) →
Flow in GPM (L/min) →
LC 63 DB...D7X
435
(30)
363
(25)
290
Inlet pressure in PSI (bar) →
By-pass pressure in PSI (bar) →
Lowest set pressure in PSI (bar)
Manual pressure adjustment LFA 63
DB
...7X/…
DBW
Size 63
(20)
218
(15)
145
(10)
72.5
(5)
..DB40..
..DB20..
132
264
396
528
660
(500)
(1,000)
(1,500)
(2,000)
(2,500)
0
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
132
264
396
528
660
(500)
(1,000)
(1,500)
(2,000)
(2,500)
Flow in GPM (L/min) →
Lowest set pressure in
PSI (bar) →
508
(35)
435
(30)
363
(25)
290
(20)
218
(15)
145
(10)
72.5
(5)
0
..DB40..
..DB20..
132
264
396
528
660
(500)
(1,000)
(1,500)
(2,000)
(2,500)
5,076
(350)
4,351
(300)
3,626
(250)
2,901
(200)
2,176
(150)
1,450
(100)
725
(50)
0
Flow in GPM (L/min) →
(35)
(30)
363
(25)
290
(20)
..DB40..
218
(15)
145
(10)
72.5
(5)
0
..DB20..
132
264
396
528
660
(500)
(1,000)
(1,500)
(2,000)
(2,500)
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
508
435
132
264
396
528
660
(500)
(1,000)
(1,500)
(2,000)
(2,500)
Flow in GPM (L/min) →
LC 63 DB...D7X
Lowest set pressure in
PSI (bar) →
Electrical proportional pressure adjustment LFA 63 DBE …7X/…
LC 63 DB...E7X
Inlet pressure in PSI (bar) →
Flow in GPM (L/min) →
5076
(350)
4351
(300)
3626
(250)
2901
(200)
2176
(150)
1450
(100)
725
(50)
0
132
264
(500)
(1,000)
396
528
660
(1,500)
(2,000)
(2,500)
Flow in GPM (L/min) →
11/66
RA 21 050/06.98
Compression springs (DB and DR) for sizes 16 ... 100
Size
Part no.
Dimensions in inches
16
00062747
00062753
00062754
00062757
00082073
0.402/0.051 x 1.6/0.315
0.394/0.063 x 1.504/0.354
0.386/0.067 x 1.496/0.354
0.382/0.075 x 1.406/0.335
0.362/0.095 x 2.382/0.571
(Dimensions in mm) Model code
(10.2/1.3 x 40.5/8.0)
(10.0/1.6 x 38.2/9.0)
(9.8/1.7 x 38.0/9.0)
(9.7/1.9 x 35.7/8.5)
(9.2/2.4 x 60.5/14.5)
20
30
40
50
80 1)
25
00062762
00062764
00062820
00062819
00082072
0.602/0.089 x 2.165/0.315
0.587/0.106 x 2.102/0.335
0.579/0.11 x 2.106/0.335
0.575/0.118 x 2.067/0.335
0.555/0.138 x 3.091/0.472
(15.3/2.25 x 55.0/8.0)
(14.9/2.7 x 53.4/8.5)
(14.7/2.8 x 53.5/8.5)
(14.6/3.0 x 52.5/8.5)
(14.1/3.5 x 78.5/12.0)
20
30
40
50
80 1)
32
00062813
00062783
00062810
00062805
00082071
0.772/0.11 x 2.736/0.295
0.756/0.126 x 2.795/0.335
0.752/0.134 x 2.835/0.375
0.752/0.138 x 2.866/0.354
0.728/0.158 x 4.291/0.571
(19.6/2.8 x 69.5/7.5)
(19.2/3.2 x 71.0/8.5)
(19.1/3.4 x 72.0/9.5)
(19.1/3.5 x 72.8/9.0)
(18.5/4.0 x 109/14.5)
20
30
40
50
80 1)
40
00014032
00014033
00011119
00011119
0.953/0.158 x 2.461/0.256
0.949/0.167 x 2.677/0.295
0.898/0.221 x 5.512/0.61
0.898/0.221 x 5.512/0.61
(with washer 0.295)
(24.2/4 x 62.5/6.5)
(24.1/4.25 x 68/7.5)
(22.8/5.6 x 140/15.5)
(22.8/5.6 x 140/15.5)
(with washer 7.5)
20
40
50
80 1)
50
00014034
00014035
00015962
00015962
1.15/0.197 x 3.012/0.295
1.15/0.197 x 3.406/0.295
1.102/0.248 x 7.874/0.65
1.102/0.248 x 7.874/0.65
(with washer 0.551)
(29.2/5 x 76.5/7.5)
(29.2/5 x 86.5/7.5)
(28/6.3 x 200/16.5)
(28/6.3 x 200/16.5)
(with washer 14)
20
40
50 1)
80 1)
63
00014036
00014037
00011778
00011778
1.48/0.256 x 4.035/0.315
1.48/0.256 x 4.528/0.315
1.398/0.335 x 10.12/0.768
1.398/0.335 x 10.12/0.768
(with washer 0.551)
(37.6/6.5 x 102.5/8)
(37.6/6.5 x 115/8)
(35.5/8.5 x 257/19.5)
(35.5/8.5 x 257/19.5)
(with washer 14)
20
40
50 1)
80 1)
80
00012353
1.91/0.315 x 5.433/0.295
(48.5/8 x 138/7.5)
20
100
00012385
2.059/0.374 x 6.929/0.374
(52.3/9.5 x 176/9.5)
20
1)
These springs require an additional installation length.
When using standard control covers, an additional
sandwich plate LFA..D22-.. must be used.
Exception:
Control cover model "D" can be replaced by LFA..D8-../F
(no sandwich plate required).
Seal kits for cartridge valves
Seal kits for cartridge valves models LC..DB../.. (sizes 16 ... 100)
Seal kit
for
Part NBR
LC 16 DB..7X/...
LC 25 DB..7X/...
LC 32 DB..7X/...
LC 40 DB..6X/...
LC 50 DB..6X/...
00313104
00313105
00313106
00314055
00314056
12/66
Part number
Part FPM
00313107
00313108
00313109
00314064
00314065
Seal kit
for
Part NBR
Part number
Part FPM
LC 63 DB..6X/...
LC 80 DB..6X/...
LC 100 DB..6X/...
00314057
00314058
00314059
00314066
00314067
00314068
RA 21 050/06.98
General notes on the ordering details for control covers
1
2
3
4
5
6
LFA
DB
max
7
8
A...
B...
9
DB2
DB1
= available
Nominal size
16
25 32 40
50
Model
Page
Control
model
Series
63 80 100
Pressure rating in PSI (bar)
for sizes
16...34
40...100
Seal
part
6X
DB
18 ...20
DBW
21...25
DBS
21...25
DBWD
26...28
362.6 (025) 362.6 (025); 725.2 (050)
725.2 (050) 1,450.4 (100); 2,901 (200)
4,569 (315); 5,802 (400)
1,450.4 (100)
2,901 (200) 362.6 (025); 725.2 (050)
4,569 (315) 1,450.4 (100); 2,901 (200)
6,092 (420) 4,569 (315); 5,802 (400)
362.6 (025); 725.2 (050)
1,450.4 (100); 2,901 (200)
4,569 (315); 5,802 (400)
362.6 (025)
DBU2A
29...32
DBU2B
DBU3D
33...37
362.6 (025)
725.2 (050)
725.2 (050)
1,450.4 (100)
1,450.4 (100)
2,901 (200)
2,901 (200)
4,569 (315)
4,569 (315)
6,092 (420)
5,802 (400)
DBE
38
For ordering codes, see pages giving details of
cover variations
7X
DBETR
DBEM
362.6 (025)
725.2 (050) 362.6 (025); 725.2 (050)
1,450.4 (100) 1,450.4 (100); 2,901 (200)
2,901 (200) 4,569 (315); 5,802 (400)
4,569 (315)
6,092 (420)
39...42
DBEMTR
For functions, see selection table on page 15
4
Types of adjuster for pressure relief valves
1 = Handknob
2 = Screw adjustment with locknut & protective cap
3 = Lockable handknob with scale
(H lock to automotive industry standards)
4 = Handknob with scale, not lockable
5
Series codes
7X = Series 70 to 79 and
6X = Series 60 to 69
(unchanged installation and connection dimensions)
6
Pressure ratings
Dependent on size and permissible working
pressure of the pilot valve. For further details see
ordering codes for the control cover.
7
A...
8
B...
Pressure data for DB1 only for models DBU2 and
DBU3
Pressure data for DB2 only for model DBU3
Ordering example for model DBU3
.../315* A 100 B 200 (DB max. /DB1/DB2)
*DB max. always first
The orifices built into the control cover are bolted
plug model orifices.
These are standard components.
No ordering code is necessary.
Orifice shown within
the main symbol
13/66
RA 21 050/06.98
General notes on the ordering details for control covers
Technical data (for applications outside these parameters, please consult us!)
Mineral oil (HL, HLP) to DIN 51 524 1);
Fast bio-degradable pressure fluids to
VDMA 24 568 (also see RA 90 221); HETG 1);
HEPG (polyglycol) 2); HEES (synthetic ester) 2);
other fluids on request
Pressure fluid
1)
2)
suitable for NBR and FPM seals
only suitable for FPM seals
°F (°C)
Pressure fluid - temperature range
– 22 to + 176 (– 30 to + 80) (NBR seals)
– 4 to + 176 (– 20 to + 80) (FPM seals)
SUS (mm2/s)
Viscosity range
Degree of fluid contamination
Max. perm. operating pressure
PSI (bar)
35 to 1,760 (2.8 to 380)
Maximum permissible degree of contamination of the fluid is to
NAS 1638 class 9. We, therefore, recommend a filter with a
minimum retention rate of ß10 ≥ 75.
up to 6,092 (420)
Attention: pmax dependent on pressure rating of pilot valve
Pilot valves (perm. operating pressure)
Notes on pilot valves
By combining a 2-way cartridge valve with a pilot valve, various valve functions may be implemented.
The following components may be used with porting pattern form DO3 (up to size 63) and form DO5 (sizes 80 to 100) DIN 24 340.
Pilot valve
Model
Control cover
RA no.
Max. perm. operating pressure PSI (bar)
X
Y, T
When
controlling
Static
pressure
Included in
model code
Has to be
specially
ordered
DB
sizes 16 – 32
DBD.6 K1X/... 2)
25 402
sizes 40 – 63
DBD.10 K1X/... 2)
25 402
sizes 80, 100
.WE 6...
23 178
sizes 16 – 63
.WE 10...
23 316
sizes 80, 100
M-3SEW 6...
M-3SED 6...
M-3SEW 10...
M-3SED 10...
DBET-5X/... 3)
22 058
22 049
22 075
22 045
29 165
sizes 16 – 63
DBETR-1X/... 4)
29 166
sizes 16 – 100
DBW
DBWD
DBU2.
DBU3D
DBEM(TR)
DBS
DBW
DBWD
DBU2.
DBU3D
DBW
DBS
sizes 80, 100)
sizes 16 – 100
DBE
DBEM
DBETR
DBEMTR
6,092 (420)
4,569 (315)
5,802 (400)
4,569 (315)
5,802 (400)
5,076 (350)
4,569 (315)
6,092 (420)
4,569 (315)
6,092 (420)
4,569 (315)
5,076 (350)
4,569 (315)
Zero pressure (up to ≈ 29 PSI (2 bar)
DBD.2K2X/... 1)
4,569 (315)
3,046 (210) (=)
2,321 (160) (~)
3,046 (210) (=)
2,321 (160) (~)
1,450 (100)
X-580 (40)
1,450 (100)
X-580 (40)
1,450 (100)
4569 (315)
1)
Possible pressure ratings in PSI (bar): 362.6 (25), 725.2 (50), 1,450 (100), 2,901 (200), 4,569 (315), 6,092 (420)
Possible pressure ratings in PSI (bar): 362.6 (25), 725.2 (50), 1,450 (100), 2,901 (200), 4,569 (315), 5,802 (400)
3) Possible pressure ratings in PSI (bar): 725.2 (50), 1,450 (100), 2,901 (200), 4,569 (315), 5,076 (350)
4) Possible pressure ratings in PSI (bar): 362.6 (25), 1,160 (80), 2,611 (180), 3,336 (230), 4,569 (315)
2)
Valve mounting bolts are included within the control cover scope of supply.
Pilot valve
model
Dimensions
Metric
…/12
Tightening torque
in lb-ft (Nm)
Pilot valve
model
S.H.C.S. DIN 912-10.9
Dimensions
Tightening torque
Metric
…/12
in lb-ft (Nm)
M-3SEW 6...
M5 x 45
10-24x1-3/4"
6.56 (8.9)
WE 6...
M5 x 50
M-3SEW 10...
M6 x 40 1/4-20x1-1/2"
11.4 (15.5)
WE 10...
M6 x 40 1/4-20x1-1/2"
M-3SED 6...
M5 x 50
6.56 (8.9)
DBET...
M5 x 30
10-24x1-1/4"
6.56 (8.9)
M-3SED 10...
M6 x 40 1/4-20x1-1/2"
11.4 (15.5)
DBETR...
M5 x 50
10-24x2"
6.56 (8.9)
14/66
10-24x2"
10-24x2"
6.56 (8.9)
11.4 (15.5)
RA 21 050/06.98
Pilot valves (selection table)
Nominal size
16 40 80
to to and
32 63 100
Model
Pilot valve
Manual pressure setting
a
a
B
b
P
A
a
= available
b
T
Position "a"
Position "b"
Position "a"
Position "0"
B
0
P
1
Without directional valve
With directional valve
DB
A
Symbols
(see
page 16)
b
b
Position "b"
T
3WE6B9-...
open
DB function
M-3SE.6C...
Directional valve
unloading
DBW
DB function
open
3WE10B9-...
open
DB function
4WE10D...
DB function
open
open
DB function
DB function
open
M-3SE.10C./...
open
DB function
M-3SE.10U./...
DB function
open
DB function
closed
closed
DB function
M-3SE.6U...
M-3SE.6C...
DBS
Isolatiing function
2 3
4WE6D...
M-3SE.6U...
3WE6B9-...
2 pressure ratings
4
3WE10B9-...
DBWD
3WE6A-...
4WE6M..
open
5
3WE10A...
4WE10M...
3 pressure ratings
3
open
4WE6H...
DBU2A
4WE10H...
open
4WE6D...
4WE6D...
4WE10D...
6
DB1 function
4WE10D...
DBU2B
DB1 function
4WE6H...
DB max. function
open
4WE10H...
DBU3D
4WE6E...
DB1 function
DB max. function
DB1 function
DB2 function
7
DB max. function
4WE10E...
4WE6D...
4WE10D...
DB1 function
Proportional
valves
Proportional pressure setting model
DBE
DBET-5X/...
DBETR
DBETR-1X/...
DBEM
DBET-5X/...
DBEMTR DBETR-1X/...
Open = by-pass circuit
without max. pressure safety limit
8
with max. pressure safety limit
9
DB function = pressure relief function
Closed = cartridge valve is hydraulically blocked
15/66
RA 21 050/06.98
Symbol overview (basic symbols), pressure relief function
The following models are offered within this data sheet.
LFA..DB.-../..sizes 16...100
LFA..DBW.-../..sizes 16...32
1
2
LFA..DBW.-../..sizes 40...100
3
A
B
P
P**
T
X
D**
X
P
X
Y
B
P
T
D**
X
X
Y
P
F**
X
Y
B
Y
B
X
A
A
A
4
see pages 21...25
see pages 21, 22
see pages 18...20
LFA..DBS.-../..sizes 40...100
LFA..DBWD.-../..sizes16...100
5
A
LFA..DBU2A.-../..sizes 16...100
6
a
Y
T
F**
X**
F**
B
A**
T
X**
A
a
a
A
B
P
T
a
A
B
P
T
a
P
T
P**
B**
DB1
X
D**
X
Y
X
X**
F**
F**
X
Y
B
X
P**
Y
B
A
Y
D** DBmax
X
X**
A
see pages 21...25
see pages 26...28
X
Y
F**
Y
B
A
see pages 29...32
LFA..DBU3D.-../..sizes 16...100
7
A
B
P
T
LFA..DBE(TR).-../..sizes 16...63
8
LFA..DBEM(TR).-../..sizes 16..100
9
a
DB1
DB2
P**
D**
P**
Y
X
X**
P**
X
Y
B
X
F**
Y
B
A
F**
Y
B
A
see pages 33...37
16/66
X**
A
X**
X
X
DBmax
D**
Y
D**
X
see pages 38
see pages 39...42
RA 21 050/06.98
Dimensions of the R-rings for ports X, Y (included within the scope of supply)
Size
Dimensions in inches
(Dimensions in mm)
16
25
32
40, 25
63
80
100
0.331 x 0.055 x 0.070
0.386 x 0.059 x 0.070
0.440 x 0.063 x 0.070
0.504 x 0.095 x 0.103
0.737 x 0.103 x 0.103
1.046 x 0.139 x 0.139
1.359 x 0.139 x 0.139
(8.41 x 1.40 x 1.78)
(9.81 x 1.50 x 1.78)
(11.18 x 1.60 x 1.78)
(12.81 x 2.40 x 2.62)
(18.72 x 2.62 x 2.62)
(26.57 x 3.53 x 3.53)
(34.52 x 3.53 x 3.53)
Part number
NBR
FPM
00025407
00017453
00017455
00017457
00024445
00017466
00017472
00025408
00017610
00017611
00017617
00024446
00017630
00017633
Seal kits for control cover model LFA../.. (sizes 16 ... 100)
Part number
Size
16
Seal
kit for
25
NBR
32
NBR
FPM
FPM
NBR
..DBWD..; ..DBEM(TR)..
00313955
00313956
00313957 00313958
..DBU2..; ..DBU3..
00313709
00313710
00313711 00313712
00313701
00313702
40
FPM
NBR
FPM
00313802 00313803
00313722
00313723
00313713 00313714
00313715
00313716
00313703 00313704 00313705 00313706
Part number
63
80
00313707
00313708
..DB..; DBW..; .. DBS..
DBE(TR)..
Size
Seal
kit for
50
NBR
FPM
..DB..; DBW..; .. DBS..
NBR
NBR
FPM
00313724
00313725 00313726 00313727 00310533
..DBU2.., ..DBU3..
..DBE(TR)..
00313717
00313718 00313719 00313720
00313897
00313898 00313899 00313700
..DBEM(TR)..
00313893
00313894 00313895 00313896
..DBWD..
FPM
100
NBR
FPM
00311930
Mounting bolts (included within the scope of supply)
S.H.C.S. to DIN 912-10.9
Size
Qty.
Dimensions
Tightening
torque
in lb-ft (Nm)
16
4
M8 x 45
23.6 (32)
25
4
M12 x 50
81.13 (110)
32
4
M16 x 60
199.14 (270)
40
4
M20 x 70
383.5 (520)
50
4
M20 x 80
383.5 (520)
63
4
M30 x 100
1328 (1800)
80
8
M24 x 120
663.8 (900)
100
8
M30 x 120
1328 (1800)
Orifice thread size
“D” position orifices for model LFA...DBE.. sizes 25...63
M8 x1 tapered
All orifices for sizes 80, 100 .................
M8x1 tapered /G 1/4.
Other built-in orifices .............
M6 tapered
Pipe thread "G" to ISO 228/1
17/66
RA 21 050/06.98
Control cover with manual pressure adjustment: dimensions in inches (millimeters)
Sizes 16 ... 100
1
2
3
5
4
9
6
DB
LFA
12 =
Nominal size 16
Nominal size 25
Nominal size 32
Nominal size 40
Nominal size 50
Nominal size 63
Nominal size 80
Nominal size 100
series 7X
=
=
=
series 6X
= 40
= 50
= 63
= 80
= 100
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
16
25
32
No code =
V=
NBR seals
FPM seals
(other seals on request)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Pressure ratings
Adjustment mechanism
Handknob
Screw adjustment with locknut and protective cap
Lockable handknob with scale
(H lock to automotive industry standard)
Handknob with scale not lockable
=1
=2
=3
025 =
050 =
100 =
200 =
315 =
420 =
=4
Sizes 16, 25, 32
362 PSI (25 bar)
725 PSI (50 bar)
1,450 PSI (100 bar)
2,901 PSI (200 bar)
4,569 PSI (315 bar)
6,092 PSI (420 bar)
6X =
7X =
LFA..DB.-7X/..
Sizes 16, 25, 32
Sizes 16 ... 32
Series 6X (sizes 40 to 100)
Series 7X (sizes 16 to 32)
with size 32
** Orifice - Ø
D**
X
Size
X
0.079 (2)
D**
9
A
L2
L1
DBD.2K.
L4
0.039 (1.0)
H1
1.575 (40)
1.575 (40)
1.969 (50)
H2
0.669 (17)
0.748 (19)
1.024 (26)
H3
0.591 (15)
0.945 (24)
1.102 (28)
H4
0.748 (19)
0.748 (19)
1.024 (26)
L1
2.559 (65)
3.347 (85) 3.937 (100)
L2
3.15 (80)
3.347 (85) 3.937 (100)
22 A/F
H3
1.65 (42)
2.05 (52) max
3
4
10
5
3
0
9 8
6; 7
2 1
Ø 1.58 (40)
Y
H4
F
0.71 (18)
4.1 (104)
3.15 (80) max
D
X
8
10 A/F
Ø1.38 (35)
only with version10
LFA 32 DB.-6X
L4 1.28 (32.5) 1.791 (45.5) 2.087 (53)
Ø 1.26 (32)
L3
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
H1
H2
32
L3 1.437 (36.5) 1.929 (49) 2.224 (56.5)
0.158 (4)
18/66
25
F** 0.039 (1.0) 0.039 (1.0) 0.047 (1.2)
Y
B
with sizes 16, 25
1
16
X** 0.032 (0.8) 0.032 (0.8)
F**
X**
3
Sizes 40, 50, 63, 80, 100
025 =
362 PSI (25 bar)
050 =
725 PSI (50 bar)
100 = 1,450 PSI (100 bar)
200 = 2,901 PSI (200 bar)
315 = 4,569 PSI (315 bar)
400 = 5,802 PSI (400 bar)
RA 21 050/06.98
Control cover with manual pressure adjustment: dimensions in inches (millimeters)
** Orifice - Ø
LFA..DB.-6X/..
Sizes 40, 50, 63
D**
X
50
63
D** 0.039 (1.0) 0.079 (2.0) 0.079 (2.0)
F**
B
Y
D1
SAE-6;
9/16-18
G1/4
SAE-8;
3/4-16
G1/2
H1
2.362 (60)
2.677 (68)
H2
1.102 (28) 0.768 (19.5) 1.181 (30)
H3
1.26 (32)
1.339 (34)
H4
1.063 (27)
1.378 (35) 1.791 (45.5)
A
Sizes 40, 50
40
F** 0.047 (1.2) 0.047 (1.2) 0.059 (1.5)
Y
X
Size
3
32 A/F
L3
30 A/F
19 A/F
10
3.228 (82)
1.969 (50)
L1 4.921 (125) 5.512 (140) 7.087 (180)
Y
L2
L5
X
9
2.84 (72)
2.717 (69)
L3
3.504 (89) 4.134 (105)
L4
2.992 (76)
3.307 (84)
L5
2.362 (60)
2.756 (70)
T1
0.472 (12)
0.551 (14)
3.15 (80)
H3
Ø 2.36 (60)
Y
6; 7
Ø 2.36 (60)
Ø 1.38 (35)
D1/T1
H2
D
F
5
H4
2
D1/T1
X
L2
3.7 (94) max
0.158 (4)
1
H1
L4
L1
6 A/F
3.7 (94) max
0.158 (4)
4.88 (124)
0.787 (20)
3
DBD.6K..
Size 63
4
8
L1
3
Y
3.54 (90)
X
1 Port X optionally as threaded port
2 Port Y optionally as threaded port
3.54 (90)
4 Adjustment "2"
6 Adjustment "3"
3.7 (94) max
4.88 (124)
5 Adjustment "1"
7 Adjustment "4"
8 Space required to remove key
5
6; 7
10 Lock nut
A/F = Across Flats
H3
Y
3 Locating pin
9 Name plate
H4
F
X
Ø 2.36 (60)
Ø 2.36 (60)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
D
8
20
4
30 A/F
2.84 (72)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
32 A/F
H2
H1
1
6 A/F
Ø 1.38 (35)
19 A/F
10
DBD.6K..
3.7 (94) max
9
0.158 (4)
0.158 (4)
3
2
19/66
RA 21 050/06.98
Control cover with manual pressure adjustment, for electrical unloading:
dimensions in inches (millimeters)
** Orifice - Ø
LFA...DB.-6X/...
Sizes 80, 100
Size
Y
X
X**
100
X** 0.118 (3.0) 0.118 (3.0)
F**
F** 0.098 (2.5) 0.098 (2.5)
B
X
80
D2 9.843 (250) 9.843 (250)
Y
H1 3.937 (100) 3.937 (100)
A
H2
1.496 (38)
1.496 (38)
H3
1.772 (45)
2.008 (51)
H4
2.284 (58)
2.284 (58)
L5
1.969 (50)
1.969 (50)
Sizes 80, 100
3
D
2
L8
X
F
Y
DBD.10K..
8
19 A/F
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
4.72 (120)
6 A/F
2.68 (68)
0.158 (4)
1
Ø 2.36 (60)
Ø 1.5 (38)
36 A/F
Ø 2.36 (60)
1 Port X optionally as
threaded port
3.54 (90) max
30 A/F
3.54 (90) max
4
10
0.79 (20)
9
5
2 Port Y optionally as
threaded port
3 Locating pin
F
Y
5
6; 7
0.098 (2.5)
1
G1/2; 0,55 (14)
3
0.098 (2.5)
5 Adjustment "1"
6 Adjustment "3"
H3
X
H4
H2
H1
4 Adjustment "2"
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
7 Adjustment "4"
2
8 Space required to remove
key
9 Name plate
10 Lock nut
11 Valve mounting bolts are
included within the scope of
supply
A/F = Across Flats
20/66
RA 21 050/06.98
Control cover with manual pressure adjustment, with electrical unloading
Sizes 16 ... 100
1
2
3
4
5
6
9
LFA
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
= 40
Size 40
Size 16 series = 16 Size 50 series = 50
= 63
Size 25
= 25 Size 63
6X = 80
Size 32 7X
= 32 Size 80
= 100
Size 100
Control cover model
For mounting a directional spool or
poppet valve (sizes 16, 25, 32)
No code =
V=
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Pressure ratings
= DBW
For mounting a directional poppet valve
(sizes 40, 50, 63, 80, 100)
= DBS
Adjustment mechanism
Handknob
Screw adjustment with locknut and protective cap
Lockable handknob with scale
(H lock to automotive industry standard)
Handknob with scale not lockable
NBR seals
FPM seals
(other seals on request)
025 =
050 =
100 =
200 =
315 =
420 =
=1
=2
=3
=4
Sizes 16, 25, 32
362 PSI (25 bar)
725 PSI (50 bar)
1,450 PSI (100 bar)
2,901 PSI (200 bar)
4,569 PSI (315 bar)
6,092 PSI (420 bar)
6X =
7X =
Sizes 40, 50, 63, 80, 100
025 =
362 PSI (25 bar)
050 =
725 PSI (50 bar)
100 = 1,450 PSI (100 bar)
200 = 2,901 PSI (200 bar)
315 = 4,569 PSI (315 bar)
400 = 5,802 PSI (400 bar)
Series 6X (sizes 40 to 100)
Series 7X (sizes 16 to 32)
Sizes 16 ... 63
4WE 6 D../..
a
A
B
P
T
3WE 6 B9-../..
a
M-3SED 6 C../350…
A
B
A
P
T
P
T
P**
D**
X
Y
T
X**
X
M-3SED 6 U../350…
M-3SEW 6 U../420…
F**
A
Y
B
M-3SEW 6 C../420…
P
A
P
T
T
A
LFA..DBW.-7X/...
Sizes 16, 25, 32
a
A
B
P
T
D**
M-3SED 6 U../350…
M-3SEW 6 U../420…
3WE 6 B9-../..
4WE 6 D../..
a
A
B
P
T
M-3SED 6 C../350…
A
A
P
B
A**
P
T
T
P**
X
X
D**
Y
Y
F**
X
F**
B
A
Y
LFA..DBW.-6X/...
Sizes 40, 50, 63
X
LFA..DBS.-6X/...
Sizes 40, 50, 63
B
Y
M-3SEW 6 C../420…
A
P
T
A
21/66
RA 21 050/06.98
Control cover with manual pressure adjustment, for electrical unloading:
dimensions in inches (millimeters)
Sizes 16 ... 32
0.079 (2)
3
9 10
22 A/F
10 A/F
L2
Ø 1.26 (32)
9 8
0
3
Y
T
L4
2 1
A
X
Ø 1.58 (40)
Ø1.38 (35)
P
B
L3
L1
1.28 (32.5)
4.1 (104)
3.15 (80) max
0.158 (4)
0.71 (18)
1.6 (40.5)
L6
1.65 (42)
2.05 (52) max
L5
2
4
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
10
5
Directional
poppet valve
M-3SED 6 U
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
A
A
P
F
Y
H3
X
H4
H5
D
H2
H1
1
8
Directional poppet valve
U
M-3SEW 6C ../…
Directional spool valve WE 6...
11
6; 7
DBD.2K.
0.158 (4)
3
1 Port X optionally as threaded port
8 Space required to remove key
2 Port Y optionally as threaded port
9 Name plate
3 Locating pin
10 Lock nut
4 Adjustment "2"
11 Valve mounting bolts are included within
the scope of supply
5 Adjustment "1"
6 Adjustment "3"
A/F = Across Flats
7 Adjustment "4"
**Orifice - dia.
Size
16
25
P**
L2
L3
L4
0.039 0.032 0.039 0.032 1.575 0.669 0.591 0.748 1.102 2.559
3.15
1.437
1.28
(1.0)
(80)
(36.5) (32.5)
(1.0)
D**
(0.8)
H1
(40)
H2
(17)
H3
(15)
H4
(19)
H5
(28)
L1
(65)
L5
L6
L7
1.378 0.276 0.669
(35)
(7)
(17)
(0.8)
(1.0)
(0.8)
(40)
(19)
(24)
(19)
(28)
(85)
(85)
(49)
(45.5)
(36)
(8)
(27)
0.039 0.039 0.047 0.039 1.969 1.024 1.102 1.024 1.457 3.937 3.937 2.224 2.087 2.244 1.221 1.358
(1.0)
22/66
(0.8)
F**
0.039 0.032 0.039 0.032 1.575 0.748 0.945 0.748 1.102 3.347 3.347 1.929 1.791 1.417 0.315 1.063
(1.0)
32
X**
(1.0)
(1.2)
(1.0)
(50)
(26)
(28)
(26)
(37)
(100)
(100) (56.5)
(53)
(57)
(31) (34.5)
RA 21 050/06.98
Control cover with manual pressure adjustment, for electrical unloading:
dimensions in inches (millimeters)
Sizes 40, 50
3.7 (94) max
T
Ø 1.38 (35)
L7
11
6; 7
5
8
LFA..DBS.-../...
2
Directional
poppet valve
M-3SED 6 U
Directional
poppet valve
U
M-3SEW 6C ../…
LFA..DBW.-6X/...
A
Directional spool valve WE6 ...
A
A
Y
H3
X
D
H2*
F
P
H4
H2
D
H5
SAE-6; 9/16-18
[G1/4; 0.47 (12)] (Size 40)
SAE-8; 3/4-12
[G1/2; 0.55 (14)] (Size 50)
9
SAE-6; 9/16-18
[G1/4; 0.47 (12)] (Size 40)
SAE-8; 3/4-12
[G1/2; 0.55 (14)] (Size 50)
L5
11
H1
Y
1.59 (40.5)
L6
4
Ø 2.36 (60)
A
DBD.6K..
Ø 2.36 (60)
B
3.7 (94) max
L4
X
1.22 (31)
P
L3*
L3
L1
1.28 (32.5)
2.84 (72)
F
X
SAE-6; 9/16-18
[G1/4; 0.47 (12)] (Size 40)
SAE-8; 3/4-12
[G1/2; 0.55 (14)] (Size 50)
6 A/F
30 A/F
0.158 (4)
19 A/F10
32 A/F
1
0,787 (20)
4.88 (124)
3
3
1 Port X optionally as threaded port
8 Space required to remove key
2 Port Y optionally as threaded port
9 Name plate
3 Locating pin
10 Lock nut
4 Adjustment "2"
11 Valve mounting bolts are included within
the scope of supply
5 Adjustment "1"
6 Adjustment "3"
A/F = Across Flats
7 Adjustment "4"
*Dimensions for control cover LFA..DBS..
Size
40
A**
F**
D**
H1
H2
H2*
H3
H4
H5
L1
L3
L3*
L4
L5
L6
L7
0.032 0.047 0.047 0.039 2.362 1.850 0.669 1.260 1.063 1.575 4.921 2.461 2.717 2.992 2.677 1.713 1.850
(0.8)
50
P**
**Orifice - dia.
(1.2)
(1.2)
(1.0)
(60)
(46)
(17)
(32)
(27)
(40)
(125) (62.5) (69)
(76)
(68) (43.5)
(47)
0.032 0.0.06 0.047 0.079 2.677 2.008 0.768 1.339 1.378 1.969 5.512 2.658 3.150 3.307 2.933 2.008 2.146
(0.8)
(1.5)
(1.2)
(2.0)
(68)
(51) (19.5) (34)
(35)
(50)
(140) (67.5) (80)
(84) (74.5) (51)
(54.5)
23/66
RA 21 050/06.98
Control cover with manual pressure adjustment, for electrical unloading:
dimensions in inches (millimeters)
Size 63
9
3
11
3.43 (87) 1.22 (31)
P
A
X
Y
2.8 (71) 1.6 (40.5)
3.54 (90)
6 A/F
A
F
X
0.158 (4)
1
Y
1.77 (45)
Directional spool valve
5
3.7 (94) max
32 A/F
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
2.17 (55)
2.84 (72)
3.23 (82)
1.97 (50)
30 A/F
3.7 (94) max
A
4 DBD.6K..
D B
Ø 2.36 (60)
Ø 2.36 (60)
Ø 1.38 (35)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
10
8
19 A/F
0.787 (20)
1.38 (35)
T
4.88 (124)
B
3.54 (90)
1.28 (32.5)
4.06 (103)
7.09 (180)
LFA..DBW.-6X/...
6; 7
0.158 (4)
3
2
LFA..DBS.-.../...
1 Port X optional as threaded port
Directional poppet valve
M-3SED 6 U
2 Port Y optionally as threaded port
3 Locating pin
4 Adjustment "2"
5 Adjustment "1"
Directional
poppet valve
U
M-3SEW 6C ../…
6 Adjustment "3"
7 Adjustment "4"
8 Space required to remove key
P
9 Name plate
D
10 Lock nut
11 Valve mounting bolts are included
within the scope of supply
F
** Orifice Ø
Size
A**
A/F = Across Flats
P**
F**
D**
63 0.039 (1.0) 0.071 (1.8) 0.059 (1.5) 0.079 (2.0)
24/66
RA 21 050/06.98
Control cover with manual pressure adjustment, for electrical unloading:
dimensions in inches (millimeters)
Sizes 80, 100
4WE 10 D...
A
B
P
T
M-3SED 10 U../350…
M-3SEW 10 U../420…
3WE 10 B9...
A
B
P
T
M-3SED 10 C../350…
A
A
P
A**
P
T
T
P**
A
B**
X
X
Y
Y
X**
F**
X
M-3SEW 10 C../420…
F**
X
Y
B
LFA..DBW.-6X/...
Sizes 80, 100
A
A
Y
B
P
T
A
LFA..DBS.-6X/...
Sizes 80, 100
Directional poppet valve
U
M-3SEW 10C ../…
Directional poppet valve
M-3SED 10 U
** Orifice Ø
3
Size
80
100
A**
0.047 (1.2)
0.059 (1.5)
B**
0.118 (3.0)
0.118 (3.0)
P**
0.138 (3.5)
0.138 (3.5)
X**
0.118 (3.0)
0.118 (3.0)
F**
0.098 (2.5)
0.098 (2.5)
D2
9.843 (250)
11.81(300)
H1
3.937 (100)
3.937 (100)
H2
1.181 (30)
1.181 (30)
H3
1.772 (45)
2.008 (51)
H4
2.047 (52)
2.047 (52)
L8
2.953 (75)
3.347 (85)
X
T
B
Y
0.55 (14)
D
2
L8
9
A
P
F
1.22 (31)
DBD.10K..
11
H1
B
F
Y
5
H4
H2
5
6 Adjustment "3"
7 Adjustment "4"
8 Space required to
remove key
6; 7
H3
1
5 Adjustment "1"
9 Name plate
10 Lock nut
0.098 (2.5)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
4 Adjustment "2"
A
X
X
3 Locating ping
4.72 (120)
Directional
spool valve
2 Port Y optionally
as threaded port
Ø 2.36 (60)
A
2.68 (68)
30 A/F
36 A/F
as threaded port
Ø 2.36 (60)
3.54 (90) max
10
Ø 1.5 (38)
3.54 (90) max
6 A/F
19 A/F
8
4
0.79 (20)
1 Port X optionally
3
0.098 (2.5)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
2
11 Valve mounting bolts
are included within
the scope of supply
A/F = Across Flats
25/66
RA 21 050/06.98
Control cover with manual pressure adjustment, for isolation functions
Sizes 16 ... 100
1
2
LFA
3
4
5
6
9
DBWD
Size 16
= 16 Size 40
= 40
Size 25 series = 25 Size 50
= 50
series
Size 32 7X = 32 Size 63
= 63
6X
Size 80
= 80
Size 100
= 100
Adjustment mechanism
Handknob
Screw adjustment with locknut and protective cap
Lockable handknob with scale
(H lock to automotive industry standard)
Handknob with scale not lockable
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
No code =
V=
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Pressure ratings
=1
=2
=3
=4
Series 6X (sizes 40 to 100)
Series 7X (sizes 16 to 32)
025 =
050 =
100 =
200 =
315 =
420 =
= 6X
= 7X
Sizes 16, 25, 32
362 PSI (25 bar)
725 PSI (50 bar)
1,450 PSI (100 bar)
2,901 PSI (200 bar)
4,569 PSI (315 bar)
6,092 PSI (420 bar)
B
A
a
B
a
P
T
B**
A
B
P
T
X
Y
X**
b
X
P
B
B**
4 WE 6 M../...
a
A
a
T
P
Sizes 40, 50, 63, 80, 100
025 =
362 PSI (25 bar)
050 =
725 PSI (50 bar)
100 = 1,450 PSI (100 bar)
200 = 2,901 PSI (200 bar)
315 = 4,569 PSI (315 bar)
400 = 5,802 PSI (400 bar)
3 WE 6 B9-../...
3 WE 6 A../...
A
NBR seals
FPM seals
(other seals on request)
F**
Y
B
T
Y
X**
F**
X
Y
B
A
A
LFA..DBWD.-7X/...
Size 16
3 WE 6 B9-../...
A
3 WE 10 A...
A
B
3 WE 10 B9...
B
a
a
P
LFA..DBWD.-7X/...
Sizes 25, 32
T
A
B
P
T
a
P
T
B**
B**
4 WE 10 M...
D**
D**
Y
X
Y
a
F**
A
B
P
T
Y
B
b
F**
X
A
LFA..DBWD.-6X/...
Sizes 40, 50, 63
26/66
LFA..DBWD.-6X/...
Sizes 80, 100
Y
B
A
RA 21 050/06.98
Control cover with manual pressure adjustment, for isolation functions: dimensions in inches (millimeters)
Sizes 16 ... 32
0.079 (2)
3
9
L2
0.158 (4)
A
X
Y
T
L7
L4
1.22 (31)
P
B
L3
L1
1.28 (32.5)
DBD.2K.
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
1.56 (40.5)
L6
11
L5
22 A/F
A
10
10 A/F
9 8
0
Ø 1.26 (32)
Y
H4
Ø1.38 (35)
H5
F
X
H3
1.65 (42)
2.05 (52)max
0.158 (4)
3
4
5
10
Sizes 40, 50
32 A/F
3
1
Port X optionally as
threaded port
2
Port Y optionally as
threaded port
3
Locating pin
4
Adjustment "2"
5
Adjustment "1"
6
Adjustment "3"
7
Adjustment "4"
8
Space required to
remove key
9
Name plate
30 A/F
19 A/F
B
A
T
L7
Y
L4
X
1.22 (31)
1.28 (32.5)
P
L3
L1
10
6 A/F
9
L5
D1/T1
3.7 (94) max
11
A
6; 7
4.88 (124)
Ø 2.36 (60)
0.158 (4)
5
1.6 (40.5)
L6
2
8
1
F
A/F = Across Flats
Y
H3
X
H5
H2
D B
Valve mounting bolts are
included within the scope
of supply
Ø 2.36 (60)
2.84 (72)
A
Lock nut
11
H4
P
Ø 1.38 (35)
D1/T1
Directional spool valve . WE 6
10
0.79 (20)
3.7 (94) max
H1
8
6; 7
Ø 1.58 (40)
A
D
0.71 (18)
4.1 (104)
3.15 (80) max
P
H2
H1
1
3
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
Directional
spool valve . WE 6...
2 1
2
0.158 (4)
3
DBD.6K..
For dimension table see page 28
4
27/66
RA 21 050/06.98
Control cover with manual pressure adjustment, for isolation functions: dimensions in inches (millimeters)
**Orifice - dia.
Size 63
A
X
Y
1.38 (35)
T
3.54 (90)
DBD.6K..
Ø 1.38 (35)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
A
Directional spool valve
A
H1
H2
D B
F
Y
H3
X
H4
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
2.84 (72)
3.54 (90)
3.43 (87) 1.22 (31)
B
2.8 (71) 1.6 (40.5)
4; 5…7
11
Size 16
25
32
40
50
63
80
100
B** 0.039 0.039 0.039 0.047 0.059 0.071 0.138 0.138
(1.0) (1.0) (1.0) (1.2) (1.5) (1.8) (3.5) (3.5)
X** 0.032 0.032 0.039
0.118 0.118
(0.8) (0.8) (1.0)
(3.0) (3.0)
F** 0.039 0.039 0.047 0.047 0.047 0.059 0.098 0.098
(1.0) (1.0) (1.2) (1.2) (1.2) (1.5) (2.5) (2.5)
D**
0.039 0.079 0.079
(1.0) (2.0) (2.0)
D1
G 1/4 G 1/2
D2
9.84 11.81
(250) (300)
H1 1.58 1.58 1.97 2.36 2.68 3.228 3.937 3.937
(40)
(40) (50)
(60) (68)
(82) (100) (100)
H2
0.748 1.024 1.811 1.97 2.165 2.638 2.638
(19) (26)
(46) (50)
(55) (67) (67)
H3 0.591 0.945 1.102 1.26 1.339 1.97 1.772 2.008
(15)
(24) (28)
(32) (34)
(50) (45) (51)
H4 0.748 0.748 1.026 1.063 1.378 1.772 2.284 2.284
(19)
(19) (26)
(27) (35)
(45) (58) (58)
H5 1.102 1.102 1.457 0.63 0.787
(28)
(28) (37)
(16) (20)
L1 2.559 3.347 3.937
(65)
(85) (100)
L1
4.921 5.512 7.087
(125) (140) (180)
L2 3.15 3.347 3.937
(80)
(85) (100)
L3
1.929 2.224 2.461 2.756
(49) (56.5) (62.5) (70)
L4 1.28 1.791 2.087 2.992 3.307
(32.5) (45.5) (53)
(76) (84)
L5 1.378 1.417 2.244 2.677 2.953
(35)
(36) (57)
(68) (75)
L6 0.276 0.315 1.221 1.713 2.008
(7)
(8)
(31) (43.5) (51)
L7 0.669 1.063 1.358 1.85 2.146
(17)
(27) (34.5) (47) (54.5)
L8
2.953 3.374
(75) (85)
T1
0.472 0.551
(12) (14)
9
P
1.28 (32.5)
4.06 (103)
L1
3
0.158 (4)
0.158 (4)
3
1
2
Sizes 80, 100
T
Y
A
P
1.61 (41)
8
DBD.10K..
6 A/F
30 A/F
36 A/F
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
2.68 (68)
1
Ø 1.5 (38)
19 A/F
10
Ø 2.36 (60)
Directional
spool valve.
WE 10 ...
3 Locating pin
4 Adjustment "2"
5 Adjustment "1"
5
8 Space required to remove key
H1
0.098 (2.5)
3
H4
H2
Y
H3
F
0.098 (2.5)
28/66
6 Adjustment "3"
7 Adjustment "4"
B
X
X
1 Port X optionally as threaded port
2 Port Y optionally as threaded port
Ø 2.36 (60)
4.72 (120)
4
3.54 (90 max
11
3.54 (90) max
D
2
B
0.79 (20)
L8
X
0.55 (14)
9
3
5
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
6; 7
9 Name plate
10 Lock nut
11 Valve mounting bolts are included within the
scope of supply
2
A/F = Across Flats
RA 21 050/06.98
Control cover with 2 manual pressure adjustments, electrically selectable
1
Sizes 16 ... 100
2
3
4
5
6
9
7
LFA
A...
= 40
Size 16
= 16 Size 40
series
Size 25
= 25 Size 50 series = 50
7X
Size 32
= 32 Size 63
6X = 63
Size 80
= 80
Size 100
= 100
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
DB max. DB1
No code =
V=
Control cover model
}
= DBU2A
De-energized - DB max (4 WE.. D)
(see symbols)
= DBU2B
De-energized - DB1 (4 WE.. D)
De-energized - open (4 WE.. H)
Attention! The compatibility of the seals
and pressure fluid has to be taken into account!
Pressure ratings
Adjustment mechanism (data only for DB1)
[Block 7 in model code]
Handknob
Screw adjustment with locknut and protective cap
Lockable handknob with scale
(H lock to automotive industry standard)
Handknob with scale not lockable
025 =
050 =
100 =
200 =
315 =
420 =
=1
=2
=3
=4
Sizes 16, 25, 32
362 PSI (25 bar)
725 PSI (50 bar)
1,450 PSI (100 bar)
2,901 PSI (200 bar)
4,569 PSI (315 bar)
6,092 PSI (420 bar)
6X =
7X =
B
4 WE 6 H../ ..
b
a
4 WE 6 D../..
P
B
a
A
B
T
B
A
P
T
P
B
X
A
T
B
T
A
Y
D**
X
Y
B
X
LFA..DBU 2B.-7X/...
Sizes 16...32
T
P**
X**
A
P
DB1
DBmax
Y
A
Y
X**
F**
X
Y
B
DBmax
D**
X
F**
F**
LFA..DBU 2A.-7X/...
Sizes 16...32
B
A
P**
X**
Y
T
B
T
DBmax
D**
X
A
DB1
A
Y
B
a
P**
F**
A
b
B
T
DB max
X**
X
T
DB1
P**
D**
P
A
A
DB1
X
B
a
a
P
A
4 WE 6 D../ ..
T
A
Sizes 40, 50, 63, 80, 100
025 =
362 PSI (25 bar)
050 =
725 PSI (50 bar)
100 = 1,450 PSI (100 bar)
200 = 2,901 PSI (200 bar)
315 = 4,569 PSI (315 bar)
400 = 5,802 PSI (400 bar)
Series 6X (sizes 40 to 100)
Series 7X (sizes 16 to 32)
4 WE 6 H../..
A
a
NBR seals
FPM seals
(other seals on request)
Y
B
A
LFA...DBU 2A.-6X/...
Sizes 40 ... 63
LFA...DBU 2B.-6X/...
Sizes 40 ... 63
4 WE 10 D../...
a
A
B
P
T
A
b
B
a
A
B
P
T
a
P
T
B
B
4 WE 10 H../...
DB1
B
DB1
A
T
B
P**
A
DBmax
Y
X
DBmax
X
X**
Y
X**
F**
X
T
P**
LFA...DBU 2A.-6X/...
Sizes 80, 100
F**
Y
B
A
X
Y
B
LFA...DBU 2B.-6X/...
Sizes 80, 100
A
29/66
RA 21 050/06.98
Control cover with 2 manual pressure adjustments, electrically selectable:
dimensions in inches (millimeters)
Sizes 16 ... 32
3
9
10
22 A/F
10 A/F
8
L2
0.079 (2)
3.47 (88)
0.43 (11)
0.71 (18)
4.1 (104)
3.15 (80) max
Ø 1.26 (32)
9 8
0
3
L4
L7
0.158 (4)
1.6 (40.5)
L6
2.05 (52) max
L5
2
2 1
Y
T
Ø 1.58 (40)
Ø1.38 (35)
A
1.22
(31)
1.28 (32.5)
6; 7
P
B
X
L3
L1
1.77 (45)
1.61 (41)
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
4
11
10
5
A
1 Port X optionall as threaded port
12
Directional spool valve 4 WE 6...
M6
2 Port Y optionally as threaded port
13
3 Locating pin
A
DBD.2K.
8 Space required to remove key
DB max*)
9 Name plate
H4
Y
5 Adjustment "1"
7 Adjustment "4"
4
10 Lock nut
11 Valve mounting bolts 10-24x3-1/2"
(M5 x 90) are included within the scope
of control cover supply
H3
X
F
4 Adjustment "2"
6 Adjustment "3"
DBDS2K.
P
D
4, 5…7
0.79 (20)
DB1
H5
H2
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
1
H1
1.58 (40)
B
M6
1.65 (42)
0.158 (4)
12 Plug M6 for ..DBU 2A..
13 Plug M6 for ..DBU 2B..
*) For DBmax only adjustment "2" is
possible
3
A/F = Across Flats
**Orifice - dia.
Size
16
25
P**
L2
L3
L4
0.039 0.032 0.039 0.032 1.575 0.669 0.591 0.748 1.102 2.559
3.15
1.437
1.28
(1.0)
(80)
(36.5) (32.5)
(1.0)
D**
(0.8)
H1
(40)
H2
(17)
H3
(15)
H4
(19)
H5
(28)
L1
(65)
L5
L6
L7
1.378 0.276 0.669
(35)
(7)
(17)
(0.8)
(1.0)
(0.8)
(40)
(19)
(24)
(19)
(28)
(85)
(85)
(49)
(45.5)
(36)
(8)
(27)
0.039 0.039 0.047 0.039 1.969 1.024 1.102 1.024 1.457 3.937 3.937 2.224 2.087 2.244 1.221 1.358
(1.0)
30/66
(0.8)
F**
0.039 0.032 0.039 0.032 1.575 0.748 0.945 0.748 1.102 3.347 3.347 1.929 1.791 1.417 0.315 1.063
(1.0)
32
X**
(1.0)
(1.2)
(1.0)
(50)
(26)
(28)
(26)
(37)
(100)
(100) (56.5)
(53)
(57)
(31) (34.5)
RA 21 050/06.98
Control cover with 2 manual pressure adjustments, electrically selectable:
dimensions in inches (millimeters)
Sizes 40, 50
9
3
Size 63
3
4.13 (105)
2.84 (72)
4.13 (105)
0.43 (11)
0.433 (11)
32 A/F
32 A/F
30 A/F
30 A/F
19 A/F
19 A/F
DBDS6K..
M6
6; 7
Y
12
1.58 (40)
2.84 (72)
0.158 (4)
1 Port X optionally as threaded
port
3.54 (90)
DBD.6K..
D
F
X
3 Locating pin
11 Valve mounting bolts M5 x 90
are included within the scope
of control cover supply
4 Adjustment "2"
12 Plug M6 for ..DBU 2A..
5 Adjustment "1"
13 Plug M6 for ..DBU 2B..
6 Adjustment "3"
*) For DBmax only adjustment
"2" is possible
8 Space required to remove key
DB1
P
10 Lock nut
7 Adjustment "4"
4
4
9 Name plate
2 Port Y optionally as threaded
port
Ø 1.38 (35)
B
A
H1
H2
DBDS6K..
3
1
13
Directional spool valve 4 WE 6..
M6
0.79 (20)
F
M6
11
DBmax*)
DBmax*)
H3
X
H5
H2
D
A
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
0.158 (4)
0.158 (4)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
4; 5…7
Y
H3
H1
P
4
5…7
H4
0.79 (20)
D1/T1
DB1
Ø 1.38 (35)
1.58 (40)
DBD.6K..
3.7 (94) max
Ø 2.36 (60)
Directional spool valve 4 WE 6..
A
0.79 (20)
4.88 (124)
13
8
3.7 (94) max
H4
11
B
3.43 (87)
3.54 (90)
A
12
5
Ø 2.36 (60)
2
10
Y
2.8 (71) 1.6 (40.5)
D1/T1
L5
M6
A
1.38 (35)
L7
B
T
1.6 (40.5)
L6
9
X
1.22 (31)
T
Y
P
1.3 (32.5)
A
L1
4.06 (103)
1,77 (45)
1.22 (31)
B
6 A/F
L4
1.77 (45)
1.28 (32.5)
L1
P
X
L3
0.158 (4)
10
6 A/F
1
2
3
A/F = Across Flats
**Orifice - dia.
Size
40
P**
(1.2)
(2.0)
(2.0)
0.071 0.079 0.079
(1.8)
(2.0)
D1
G1/4
(1.0)
0.059 0.079 0.079
(1.5)
63
D**
0.047 0.047 0.039
(1.2)
50
F**
(2.0)
H1
2.362 0.669
(60)
G1/2
H2
1.26
H5
L1
L3
2.677 0.768 1.339 1.378 1.969 5.512
3.15
(34)
(27)
(35)
3.228 2.165 1.969 1.772
(82)
(55)
(50)
L4
L5
L6
1.063 1.575 4.921 2.717 2.992 2.677 1.713
(69)
(19.5)
(32)
H4
(125)
(68)
(17)
H3
(45)
(40)
(50)
(140)
(80)
(76)
(68)
(43.5)
L7
T1
1.85 0.472
(47)
(12)
3.307 2.933 2.008 2.146 0.551
(84)
(74.5)
(51)
(54.5) (14)
7.087
(180)
31/66
RA 21 050/06.98
Control cover with 2 manual pressure adjustments, electrically selectable:
dimensions in inches (millimeters)
Sizes 80, 100
3
DBDS10K..
B
A
Y
P
F
L8
2
D
T
X
0.55 (14)
1.81 (46)
2.76 (70)
*)
DBmax
4
6 A/F
19 A/F
10
30 A/F
A/F36
1.22 (31)
2.13 (54)
13
A
Directional
spool valve
9
3.94 (100)
3.54 (90) max
3.54 (90) max
2.68 (68)
Ø 1.5 (38)
1.38 (35)
DB1
H1
0.55 (14)
H2
X
P
F
Y
H3
X
H4
2.76 (70)
A
Ø 2.36 (60)
12
0.79 (20)
4.72 (120)
Ø 2.36 (60)
11
0.1 (2.5)
0.1 (2.5)
1
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
DBD.10K..
3
2
5
6; 7
4
5…7
1 Port X optionally as threaded port
9
2 Port Y optionally as threaded port
10 Lock nut
3 Locating pin
11 Valve mounting bolts are included
within the scope control cover
supply
4 Adjustment "2"
5 Adjustment "1"
8
Name plate
12 Plug M8 x 1 for ...DBU2A...
6 Adjustment "3"
13 Plug M8 x 1 for ...DBU2B...
7 Adjustment "4"
*) For DBmax only adjustment "2"
is possible
8 Space required to remove
A/F = Across Flats
**Orifice - dia.
Size
32/66
P**
X**
F**
D2
H1
H2
H3
H4
L8
80
0.138 (3.5) 0.118 (3.0) 0.098 (2.5) 9.84 (250) 3.937 (100) 1.181 (30) 1.772 (45) 2.047 (52) 2.953 (75)
100
0.138 (3.5) 0.118 (3.0) 0.098 (2.5) 11.81 (300) 3.937 (100) 1.181 (30) 2.008 (51) 2.047 (52) 3.347 (85)
RA 21 050/06.98
Control cover with 3 manual pressure adjustments, electrically selectable
Sizes 16 ... 100
1
2
LFA
Size 16
Size 25
Size 32
Size 40
Size 50
Size 63
Size 80
Size 100
series
7X
=
=
=
series
6X
= 40
= 50
= 63
= 80
= 100
3
4
5
6
7
8
9
A... B...
DBU3D
16
25
32
DB
max
DB2
DB1
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
No code =
V=
NBR seals
FPM seals
(other seals on request)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Pressure ratings
Adjustment mechanism
(data only for DB1 or DB2)*)
Handknob
Screw adj. with locknut & protective cap
Lockable handknob with scale
(H lock to automotive industry standard)
Handknob with scale not lockable
=1
=2
=3
025 =
050 =
100 =
200 =
315 =
420 =
=4
Series 6X (size 40 to 100)
Series 7X (size 16 to 32)
= 6X
= 7X
Sizes 16, 25, 32
362 PSI (25 bar)
725 PSI (50 bar)
1,450 PSI (100 bar)
2,901 PSI (200 bar)
4,569 PSI (315 bar)
6,092 PSI (420 bar)
Sizes 40, 50, 63, 80, 100
025 =
362 PSI (25 bar)
050 =
725 PSI (50 bar)
100 = 1,450 PSI (100 bar)
200 = 2,901 PSI (200 bar)
315 = 4,569 PSI (315 bar)
400 = 5,802 PSI (400 bar)
*) For DB1 and DB2 select same adjustment
(Blocks 7 and 8 of model code)
A
a
P
a
B
b
a
4WE 6 H .. /...
4WE 10 H.. /...
4WE 6 E .. /...
4WE 10 E.. /...
4WE 6 D .. /...
4WE 10 D.. /...
T
A
B
P
T
A
B
P
T
b
D** DBmax
X
T
Y
A
D**
X
Y
B
X
P
T
A
B
P
T
A
B
P
T
DB1
b
b
Y
Y
A
T
Y
X
F**
B
DB2
B
P**
T
P**
DBmax
X**
X**
F**
B
a
DB2
B
T
X**
P
DB1
DB2
P**
X
B
a
a
DB1
A
a
A
X
DBmax
F**
Y
B
A
A
A
LFA..DBU 3D.-7X/...
Sizes 16... 32
LFA..DBU 3D.-6X/...
Sizes 40, 50, 63
LFA...DBU 3D.-6X/...
Sizes 80, 100
33/66
RA 21 050/06.98
Control cover with 3 manual pressure adjustments, electrically selectable :
dimensions in inches (millimeters)
Sizes 16 ... 32
3
9
10
22 A/F
10 A/F
8
0.079 (2)
L2
3.46 (88)
0.71 (18)
4.1 (104)
3.15 (80) max
0.43 (11)
Ø 1.26 (32)
9 8
0
3
L4
L7
0.1548 (4)
1.6 (40.5)
L6
2.05 (52) max
L5
2
2 1
Y
T
11
Ø 1.58 (40)
6; 7
Ø1.38 (35)
1.22
(31)
1.28 (32.5)
P
A
B
X
L3
L1
1.77 (45)
1.61 (41)
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
1 Port X optionally as threaded
port
10
4
2 Port Y optionally as threaded
port
5
3 Locating pin
4 Adjustment "2"
A
5 Adjustment "1"
6 Adjustment "3"
Directional spool valve 4 WE 6...
7 Adjustment "4"
B
8 Space required to to remove key
A
DBD.2K.
9 Name plate
4, 5…7
10 Lock nut
0.83 (21)
DBD.2K.
11 Valve mounting bolts are
included within the scope of
control cover supply
4, 5…7
*) For DB1 and DB2 select same
adjustment
*) DB2
DBDS2K...
P
F
DB max **)
Y
A/F = Across Flats
H3
X
H5
H2
D
**) For DBmax only adjustment
"2" is possible
4
H4
H1
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
3.94 (100)
3.11 (79)
*) DB1
1.65 (42)
0.158 (4)
1
3
**Orifice - dia.
Size
16
25
P**
L2
L3
L4
0.039 0.032 0.039 0.032 1.575 0.669 0.591 0.748 1.102 2.559
3.15
1.437
1.28
(1.0)
(80)
(36.5) (32.5)
(1.0)
D**
(0.8)
H1
(40)
H2
(17)
H3
(15)
H4
(19)
H5
(28)
L1
(65)
L5
L6
L7
1.378 0.276 0.669
(35)
(7)
(17)
(0.8)
(1.0)
(0.8)
(40)
(19)
(24)
(19)
(28)
(85)
(85)
(49)
(45.5)
(36)
(8)
(27)
0.039 0.039 0.047 0.039 1.969 1.024 1.102 1.024 1.457 3.937 3.937 2.224 2.087 2.244 1.221 1.358
(1.0)
34/66
(0.8)
F**
0.039 0.032 0.039 0.032 1.575 0.748 0.945 0.748 1.102 3.347 3.347 1.929 1.791 1.417 0.315 1.063
(1.0)
32
X**
(1.0)
(1.2)
(1.0)
(50)
(26)
(28)
(26)
(37)
(100)
(100) (56.5)
(53)
(57)
(31) (34.5)
RA 21 050/06.98
Control cover with 3 manual pressure adjustments, electrically selectable:
dimensions in inches (millimeters)
Sizes 40, 50
3
0.79 (20)
4.88 (124)
3.7 (94) max
4.13 (105)
3.7 (94) max
0.43 (11)
32 A/F
30 A/F
19 A/F
Y
L7
T
1.6 (40.5)
L6
9
D1/T1
L5
Ø 2.36 (60)
A
Ø 2.36 (60)
B
1.22 (31)
P
X
L4
L1
L3
1.77 (45)
1.28 (32,5)
0.158 (4)
10
6 A/F
2
5
A
11
Directional spool valve 4 WE 6..
B
A
0.83 (21)
*)DB2
Port X optionally as threaded port
2
Port Y optionally as threaded port
3
Locating pin
4
Adjustment "2"
5
Adjustment "1"
6
Adjustment "3"
7
Adjustment "4"
8
Space required to remove key
9
Name plate
H5
H2
D
F
Y
D1/T1
X
DBmax**)
11 Valve mounting bolts are included
within the scope of control cover
supply
*) For DB1 and DB2 select same
adjustment
H4
H1
P
H3
4; 5…7
1
10 Lock nut
Ø 1.38 (35)
4.33 (110)
3.5 (89)
*)DB1
DBD.6K..
8
6; 7
**) For DBmax only adjustment "2" is
possible
2.874 (72)
0.158 (4)
A/F = Across Flats
3
1
DBDS6K..
4
H4
H5
**Orifice - dia.
Size
40
P**
F**
D**
D1
H1
H2
H3
0.047 0.047 0.039 SAE-6; 2.362 0.669
1.26
(1.2)
(32)
(1.2)
(1.0) 9/16-18 (60)
(17)
L1
L3
L4
L5
L6
1.063 1.575 4.921 2.717 2.992 2.677 1.713
(27)
(40)
(125)
(69)
0.059 0.079 0.079 SAE-8; 2.677 0.768 1.339 1.378 1.969 5.512
3.15
(1.5)
(80)
(76)
(68)
(43.5)
L7
T1
1.85 0.472
(47)
(12)
G1/4
50
(2.0)
(2.0)
3/4-16
(68)
(19.5)
(34)
(35)
(50)
(140)
3.307 2.933 2.008 2.146 0.551
(84)
(74.5)
(51)
(54.5) (14)
G1/2
35/66
RA 21 050/06.98
Control cover with 3 manual pressure adjustments, electrically selectable:
dimensions in inches (millimeters)
Size 63
9
0.79 (20)
4.88 (124)
3.7 (94) max
3.7 (94) max
4.13 (105)
0.43 (11)
32 A/F
30 A/F
10
Ø 2.36 (60)
Y
1.38 (35)
T
2.8 (71) 1.6 (40.5)
3.54 (90)
A
3.43 (87)
B
1,22 (31)
P
X
Ø 2.36 (60)
6 A/F
1.28 (32.5)
7.09 (180)
4.06 (103)
1.77 (45)
19 A/F
5
3.54 (90)
6; 7
8
A
11
Directional spool valve 4 WE 6..
A
4; 5…7
DBDS6K..
4
DBD.6K..
4; 5…7
Ø 1.38 (35)
*)DB2
**Orifice - dia.
63
F**
0.059 (1.5)
D**
0.079 (2.0)
P**
0.071 (1.8)
X
0.158 (4)
3
F
Y
0.158 (4)
2
1.79 (45.5)
D
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
2.17 (55)
P
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
1.97 (50)
3.23 (82)
0.83 (21)
DBmax**)
2.84 (72)
1
Size
DBD.6K..
*)DB1
3.5 (89)
4.33 (110)
B
1
Port X optionally as threaded port
2
Port Y optionally as threaded port
3
Locating pin
4
Adjustment "2"
5
Adjustment "1"
6
Adjustment "3"
7
Adjustment "4"
8
Space required to remove key
9
Name plate
10 Lock nut
11 Valve mounting bolts are included
within the scope of control cover
supply
*) For DB1 and DB2 select same
adjustment
**) For DBmax only adjustment "2" is
possible
A/F = Across Flats
36/66
RA 21 050/06.98
Control cover with 3 manual pressure adjustments, electrically selectable:
dimensions in inches (millimeters)
3
Sizes 80, 100
DBDS10K..
4
B
A
Y
P
L8
T
X
0.55 (14)
2.76 (70)
1.81 (46)
D
2
**) DBmax
F
6 A/F
19 A/F
10
30 A/F
1.22 (31)
36 A/F
2.13 (54)
Directional spool
valve 4 WE 10
3.54 (90) max
3.54 (90) max
1.38 (35)
H1
0.55 (14)
Ø 2.36 (60)
4
5…7
P
X
F
X
Y
H3
H2
DBD.10K..
*)DB2
H4
5.91 (150)
4.53 (115)
*)DB1
0.1 (2.5)
0.1 (2.5)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
3 9
Ø 2.36 (60)
2.68 (68)
Ø1.5 ( 38)
4.33 (110)
B
A
1
0.79 (20)
4.72 (120)
11
2
5
6; 7
8
1
Port X optionally as threaded port
2
Port Y optionally as threaded port
3
Locating pin
4
Adjustment "2"
5
Adjustment "1"
6
Adjustment "3"
7
Adjustment "4"
8
Space required to remove key
9
Name plate
10 Lock nut
11 Valve mounting bolts are included
within the scope of control cover supply
*) For DB1 and DB2 select same
adjustment
**) For DBmax only adjustment "2"
is possible
A/F = Across Flats
**Orifice - dia.
Size
P**
X**
F**
D2
H1
H2
H3
H4
L8
80
0.138 (3.5) 0.118 (3.0) 0.098 (2.5) 9.84 (250) 3.937 (100) 1.181 (30) 1.772 (45) 2.047 (52) 2.953 (75)
100
0.138 (3.5) 0.118 (3.0) 0.098 (2.5) 11.81 (300) 3.937 (100) 1.181 (30) 2.008 (51) 2.047 (52) 3.347 (85)
37/66
RA 21 050/06.98
Control cover for electrical-proportional pressure adjustment, without maximum
pressure limitation: dimensions in inches (millimeters)
Sizes 16 ... 63
1
2
3
5
–
LFA
Size 16
= 16
series
Size 25
= 25
7X
Size 32
= 32
9
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
Size 40
= 40
series
Size 50
= 50
6X
Size 63
= 63
No code =
V=
For mounting a proportional pressure relief valve
without electrical feedback
= DBE
with electrical feedback
= DBETR
Series 6X (size 40 to 63)
Series 7X (size 16 to 32)
NBR seals
FPM seals
(other seals on request)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
= 6X
= 7X
14
14
14
P**
P**
X
P**
D**
X
X
Y
B
LFA...DBE-7X/
LFA...DBETR-7X/
Size 16
NG 16, 25, 32
3
9
L2
Y
F**
Y
B
A
Sizes 16 ... 40
D**
X
F**
15
A
0.079 (2)
Y
X
X**
16
B**
15
D**
Y
out of
pressure
X
Y
B
LFA...DBE-.../
LFA...DBETR-../
Sizes 25, 32, 40
LFA...DBE-6X/
LFA...DBETR-6X/
Sizes 50, 63
A
1
Port X optionally as threaded port
2
Port Y optionally as threaded port
3
Locating pin
9
Name plate
B
A
Y
14 Proportional pressure relief valve model DBET-5X/...
(see summary on page 14, and data sheet RA 29 165)
1.22 (31)
P
X
15 Proportional pressure relief valve with electrical feedback
model DBETR-1X/...
(see summary on page 14, and data sheet RA 29 166)
L6
L5
L4
T
L3
L1
1.28 (32.5)
11 Valve mounting bolts are included within control cover supply
16 Pressure relief valve size 6 (included within the scope of supply)
**Orifice - dia. see on page 39
D1/T1 See next page for thread dimensions
1.6 (40.5)
NG 40, 50, 63
11
14
9
Sizes 50, 63
5.43 (138)
15
16
L5
1.97 (50)
1.18 (30)
0.158 (4)
3
P
1
B
D1/T1
H1
2
F
Y
H4
X
D1/T1
D
H2
Y
not
size 16
0.158 (4)
38/66
F
H3
H3
X D
P
H4
only
size 16
D1/T1
H2
H1
D1/T1
1
RA 21 050/06.98
** Orifice dia. (Ordering code, see page 38)
Size
B**
P**
X**
F**
D**
D1
H1
H2
H3
16
25
32
40
50
63
0.032 0.032
(0.8) (0.8)
0.039 0.039 0.039 0.059 0.039 0.039
(1.0) (1.0) (1.0) (1.5) (1.0) (1.0)
0.032
(0.8)
0.032 0.039 0.047 0.047 0.059
(0.8) (1.0) (1.2) (1.2) (1.5)
0.032 0.032 0.032 0.039 0.079 0.079
(0.8) (0.8) (0.8) (1.0) (2.0) (2.0)
SAE-6; 9/16-18 G 1/4 SAE-8; 3/4-16 G 1/2
1.58 1.58 1.97 2.36 2.68 3.228
(40)
(40) (50)
(60) (68)
(82)
0.669 0.748 1.024 1.181 1.26 1.181
(17)
(19) (26)
(30) (32)
(30)
0.591 0.945 1.102 1.26 1.339 1.97
(15)
(24) (28)
(32) (34)
(50)
Size 16
H4
0.787
(20)
L1 2.559
(65)
L2 3.15
(80)
L3 1.437
(36.5)
L4 0.925
(23.5)
L5 0.276
(7)
L6 0.669
(17)
T1 0.472
(12)
25
0.748
(19)
3.347
(85)
3.347
(85)
1.929
(49)
1.417
(36)
0.925
(23.5)
1.063
(27)
0.472
(12)
32
1.024
(26)
3.937
(100)
3.937
(100)
2.224
(56.5)
1.713
(43.5)
1.221
(31)
1.358
(34.5)
0.472
(12)
40
1.181
(30)
4.921
(125)
4.921
(125)
2.835
(72)
2.087
(53)
1.713
(43.5)
1.85
(47)
0.551
(14)
50
1.26
(32)
5.512
(140)
5.512
(140)
3.15
(80)
1.97
(50)
2.008
(51)
2.146
(54.5)
0.551
(14)
63
1.58
(40)
7.087
(180)
7.087
(180)
3.937
(100)
3.15
(80)
2.795
(71)
2.933
(74.5)
0.551
(14)
Control cover for electrical-proportional pressure adjustment, with maximum pressure limitation
Sizes 16...100
Size 16
Size 25
Size 32
= 16
series
= 25
7X
= 32
Size 40
Size 50
Size 63
Size 80
Size 100
= 40
= 50
= 63
series
= 80
6X
= 100
1
2
3
5
9
6
LFA
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
No code =
V=
NBR seals
FPM seals
(other seals on request)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Pressure ratings
For mounting a proportional
pressure relief valve
without electrical feedback
with electrical feedback
= DBEM
= DBEMTR
Series 6X (sizes 40 to 100)
Series 7X (sizes 16 to 32)
025 =
050 =
100 =
200 =
315 =
420 =
= 6X
= 7X
Sizes 16, 25, 32
362 PSI (25 bar)
725 PSI (50 bar)
1,450 PSI (100 bar)
2,901 PSI (200 bar)
4,569 PSI (315 bar)
6,092 PSI (420 bar)
14
Sizes 40, 50, 63, 80, 100
025 =
362 PSI (25 bar)
050 =
725 PSI (50 bar)
100 = 1,450 PSI (100 bar)
200 = 2,901 PSI (200 bar)
315 = 4,569 PSI (315 bar)
400 = 5,802 PSI (400 bar)
14
14
P**
D**
16
T
B**
A
P
Y
X**
P
LFA..DBEM-6X/...
LFA..DBEMTR-6X/...
Size 40
15
Y Y
B
D**
X
A
B
Y
Y
B
A
LFA..DBEM-6X/...
LFA..DBEMTR-6X/...
Sizes 50, 63
P**
D**
X
LFA..DBEM-6X/...
LFA..DBEMTR-6X/...
Sizes 80, 100
T
14
A
Y
P
F**
X
F**
X
zero
pressure
16
B**
T
F**
X
T
X
X
P**
P**
D**
X
F**
X**
X
Y
P
T
15
Y
B
A
LFA..DBEM-7X/...
LFA..DBEMTR-7X/...
Sizes 16, 25, 32
39/66
RA 21 050/06.98
Control cover for electrical-proportional pressure adjustment, with maximum pressure
limitation: dimensions in inches (millimeters)
Ports T and Y - zero pressure
Sizes 16 ... 32
9
0.079 (2)
3
1
Port X optionally as threaded port
2
Port Y optionally as threaded port
3
Locating pin
4
Adjustment "2"
9
Name plate
10 Lock nut
L2
B
14 Proportional pressure relief valve model
DBET-5X…–11) (see summary on page 14
and data sheet RA 29 165)
1.22 (32.5)
P
X
A
Y
15 Proportional pressure relief valve model
DBETR-1X/… (see summary on page 14
and data sheet RA 29 166)
L4
T
1)
L6
L3
L1
1.28 (32.5)
11 Valve mounting bolts are included within
control cover supply
= G 1/4 threaded port T, special poppet
A/F = Across Flats
1.6 (40.5)
L5
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
L7
2
14
11
15
1
10
D
F
Y
H3
X
H5
P
H4
Ø 1.38 (35)
10 A/F
H2
H1
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
22 A/F
1.65 (42)
0.158 (4)
DBDS2K..
3
4
**Orifice - dia.
Size
16
25
P**
D**
H1
H2
H3
H4
H5
L1
L2
L3
L4
1.28
3.15
1.437
(1.0)
(80)
(36.5) (32.5)
(0.8)
(1.0)
(0.8)
(40)
(17)
(15)
(19)
(28)
(65)
L5
L6
L7
0.276 0.669 1.378
(7)
(17)
(35)
0.039 0.032 0.039 0.032 1.575 0.748 0.945 0.748 1.102 3.347 3.347 1.929 1.791 0.315 1.063 1.417
(0.8)
(1.0)
(0.8)
(40)
(19)
(24)
(19)
(28)
(85)
(85)
(49)
(45.5)
(8)
(27)
(36)
0.039 0.039 0.047 0.039 1.969 1.024 1.102 1.024 1.457 3.937 3.937 2.224 2.087 1.221 1.358 2.244
(1.0)
40/66
F**
0.039 0.032 0.039 0.032 1.575 0.669 0.591 0.748 1.102 2.559
(1.0)
32
X**
(1.0)
(1.2)
(1.0)
(50)
(26)
(28)
(26)
(37)
(100)
(100)
(56.5)
(53)
(31)
(34.5) (57)
RA 21 050/06.98
Control cover for electrical-proportional pressure adjustment, with maximum pressure
limitation: dimensions in inches (millimeters)
Size 40
Size 50
Ø 1.38 (35)
3
A
T
L6
Y
L4
B
1.22 (31)
P
X
L3
L1
1.28 (32.5)
2.84 (72)
DBDS6K..
0.158 (4)
1.6 (40.5)
L5
L7
9
11
4
14; 15
16
1
5.43 (138)
1.18 (30)
Y
0.158 (4)
19 A/F
3
Port X optionally as threaded port
2
Port Y optionally as threaded port
3
Locating pin
4
Adjustment "2"
9
Name plate
F
X
Y
H3
32 A/F
1
D
6 A/F
H2
30 A/F
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
B
H1
H3
X
P
2
H4
F
H4
H2
D
H5
H1
P
H5
2
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
1.97 (50)
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
2.01 (51)
2.84 (72)
10
0.158 (4)
1
DBDS6K..
3
4
10 Lock nut
11 Valve mounting bolts are included within control cover supply
14 Proportional pressure relief valve model DBET-5X…G24
(size 40) model DBET-5X…G24-11) (size 50)
(see summary on page 14 and data sheet RA 29 165)
15 Proportional pressure relief valve with electrical feedback
model DBETR-1X/… (size 40)
model DBETR-1X/…4092) (size 50)
(see summary on page 14 and data sheet RE 29 166)
16 Pressure relief valve size 6 (included within the scope supply)
1)
1
2)
409 = G 1/4 threaded port T
= G 1/4 threaded port T, special poppet
A/F = Across Flats
**Orifice - dia.
Size
B**
40
50
P**
F**
D**
H1
H2
H3
0.059 0.047 0.039 2.362 0.787
1.26
(1.5)
(32)
3.15
(80)
(19.5)
(34)
L4
L5
1.063 1.575 4.921 2.717 2.992 1.713
(0.8)
(68)
(20)
L3
0.032 0.039 0.047 0.079 2.677 0.768 1.339 1.378 1.969 5.512
(2.0)
(60)
L1
(69)
(1.2)
(1.0)
H5
(125)
(1.0)
(1.2)
H4
(27)
(35)
(40)
(50)
(140)
(76)
(43.5)
L6
L7
1.68
2.677
(47)
(68)
3.307 2.008 2.146 2.933
(84)
(51)
(54.5) (74.5)
41/66
RA 21 050/06.98
Control cover for electrical-proportional pressure adjustment, with maximum pressure
limitation: dimensions in inches (millimeters)
Locating pin
4
Adjustment "2"
9
Name plate
DBDS10K..
11 Valve mounting bolts are included within control cover supply
X
B
16
1.6 (40.5)
X
H2
9
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
Y
1.38 (35)
T
2.8 (71) 1.6 (40.5)
D
X
Y
B
F
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
2
0.1 (2.5)
0.1 (2.5)
1
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
2
3
3.54 (90)
A
3.43 (87)
B
1.22 (31)
P
14
H3
3
1.38 (35)
P
H1
Size 63
L1
4.06 (103)
1.28 (32.5)
4.53 (115)
3.76 (95.5)
3.15 (80)
A/F = Across Flats
X
1.38 (35)
2.13 (54)
0.24 (6)
409 = G 1/4 threaded port T
Y
1.22 (31)
16 Pressure relief valve size 6 (included within the scope of supply)
2)
T
P
15 Proportional pressure relief valve with electrical feedback
model DBETR-1X/…4092)
(see summary on page 14 and data sheet RA 29 166)
1 = G 1/4 threaded port T, special poppet
9
A
14 Proportional pressure relief model DBET-5X…G24-11)
(see summary on page 14 and data sheet RA 29 165)
1)
4
L8
10 Lock nut
1.81 (46)
2.76 (70)
3
0.65 (16.5)
3
Sizes 80, 100
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
Port Y optionally as threaded port
1.22 (31)
2
H4
Port X optionally as threaded port
D
2
1
3.54 (90)
11
14 15
DBDS6K..
4
5.43 (138)
2.8 (71)
1.18 (30) Ø 1.38 (35)
6 A/F
2.84 (72)
1.97 (50)
16
P
H3
10
30 A/F
32 A/F
D
X
F
Y
0.158 (4)
0.158 (4)
1
19 A/F
H4
H1
H2
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
B
3
**Orifice - dia.
Size
63
80
B**
F**
D**
H1
H2
H3
H4
D2
L1
0.059 0.079 3.228 2.165 1.969 1.772
7.87
(0.8)
(1.5)
(180)
(1.0)
(2.0)
(82)
(55)
(50)
(45)
0.032 0.039 0.118 0.098 0.032 3.937 1.181 1.772 2.047 9.843
(1.0)
(3.0)
(2.5)
(0.8)
(100)
(30)
(45)
(52)
(250)
0.032 0.039 0.138 0.118 0.032 3.937 1.181 2.008 2.047 11.81
(0.8)
42/66
X**
0.032 0.039
(0.8)
100
P**
(1.0)
(3.5)
(3.0)
(0.8)
(100)
(30)
(51)
(52)
(300)
L8
2.953
(75)
3.347
(85)
RA 21 050/06.98
Pressure reducing function
Ordering code for pressure reducing cartridge valve (without associated control cover LFA..DB..)
Sizes 16 ... 63
LC
DR
No code =
V=
Size 16
= 16
series
Size 25
= 25
7X
Size 32
= 32
Size 40
= 40
series
Size 50
= 50
6X
Size 63
= 63
NBR seals
FPM seals
(other seals on request)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Closing pressure 0 PSI (0 bar)
= 00 (without spring)
Closing pressure 29 PSI (2.0 bar) = 20 1)
Closing pressure 58 PSI (4.0 bar) = 40 (standard spring)
Closing pressure 72.5 PSI (5.0 bar)= 50 2)
Closing pressure 116 PSI (8.0 bar) = 80 3)
1)
Closing pressure 29 PSI (2.0 bar with) size 16 for
mounting a DBC.-5X/... SO187 (data sheet RA 25 802)
2) Special cover LFA..D22 is required from size 40
3) Special cover LFA..D22 is required
6X =
(sizes 40 to 63)
Series 60 to 69
(60 to 69: externally interchangeable)
7X =
(sizes 16 to 32)
Series 70 to 79
(70 to 79: externally interchangeable)
E = Spool without fine control grooves (only sizes 16 to 40)
D = Spool with fine control grooves (only sizes 40 to 63)
Symbol for cartridge valves
B
Model LC..DR..
A
Technical data (for applications outside these parameters, please consult us!)
Mineral oil (HL, HLP) to DIN 51 524 1);
Fast bio-degradable pressure fluids to
VDMA 24 568 (also see RE 90 221); HETG 1);
HEPG (polyglycol) 2); HEES (synthetic ester) 2);
other fluids on request
Pressure fluid
1)
2)
suitable for NBR and FPM seals
only suitable for FPM seals
°F (°C)
Pressure fluid - temperature range
– 22 to + 176 (– 30 to + 80) (NBR seals)
– 4 to + 176 (– 20 to + 80) (FPM seals)
2
SUS (mm /s)
Viscosity range
35 to 1760 (2.8 to 380)
Degree of fluid contamination
Max. operating pressure at ports A and B
Maximum permissible degree of contamination of the fluid is to
NAS 1638 class 9. We, therefore, recommend a filter with a
minimum retention rate of ß10 ≥ 75.
PSI (bar)
up to 4569 (315)
Nominal sizes
Max. flow
16
25
32
40
50
63
LC..DR20.../..
GPM (L/min)
26.4 (100) 52.8 (200) 79.3 (300) 66 (250) 106 (400) 211 (800)
LC..DR40.../..
GPM (L/min)
39.6 (150) 79.3 (300) 119 (450) 106 (400) 159 (600) 264 (1000)
Preferably use 72.5 and 116 PSI (5 and 8 bar) biasing springs for control.
Attention:
2-way cartridge valves
LC..DR... are combined with control
covers model LFA..DB... (for ordering
code see page 13).
Pressure reducing function
Normally open
X**
F**
X
Y
e.g.
Model LFA...DB...
Model LC..DR 40...
B
A
43/66
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)
(300)
4,351
(250)
3,626
(200)
2,901
(150)
2,176
(100)
1,450
(50)
725
0
6.6
13.2
19.8
26.4
33
(25)
(50)
(75)
(100)
(125)
39.6
46.2
Pressure differential in PSI (bar) →
Lowest set pressure in PSI (bar)
Outlet pressure in PSI (bar) →
LC 16 DR...7X
(15)
217.6
(10)
145
(5)
72.5
0
(150) (175)
116 PSI
(8 bar)
58 PSI
(4 bar)
29 PSI
(2 bar)
6.6
13.2
19.8
26.4
33
(25)
(50)
(75)
(100)
(125)
3,626
(200)
2,901
(150)
2,176
(100)
1,450
(50)
725
0
Pilot oil flow in GPM (L/min)
Outlet pressure in PSI (bar) →
4,351
(250)
725
(50)
46.2
(150) (175)
Flow in GPM (L/min) →
Flow in GPM (L/min) →
(300)
39.6
1,450
2,176
2,901
3,626
4,351
(100)
(150)
(200)
(250)
(300)
(1.25)
0.33
(1.0)
0.264
(0.75)
0.198
(0.5)
0.132
(0.25)
0.066
29 PSI
(2 bar)
0
6,6
13,2
19,8
26,4
33
(25)
(50)
(75)
(100)
(125)
116 PSI
(8 bar)
58 PSI
(4 bar)
Inlet pressure in PSI (bar) →
39,6
46,2
(150) (175)
Flow in GPM (L/min) →
(300)
4,351
(250)
3,626
(200)
2,901
(150)
2,176
(100)
1,450
(50)
725
0
26.4
(100)
52.8
79.3
105.7
(200)
(300)
(400)
Pressure differential in PSI (bar) →
Lowest set pressure in PSI (bar)
Outlet pressure in PSI (bar) →
LC 25 DR...7X
(15)
218
(10)
145
(5)
72.5
0
116 PSI
(8 bar)
58 PSI
(4 bar)
29 PSI
(2 bar)
26.4
(100)
4,351
3,626
(200)
2,901
(150)
2,176
(100)
1,450
(50)
Pilot oil flow in GPM (L/min)
Outlet pressure in PSI (bar) →
(250)
725
725
(50)
1,450
2,176
2,901
3,626
4,351
(100)
(150)
(200)
(250)
(300)
Inlet pressure in PSI (bar) →
44/66
79.3
105.7
(200)
(300)
(400)
Flow in GPM (L/min) →
Flow in GPM (L/min) →
(300)
52.8
(1.6)
0.423
(1.4)
0.37
(1.2)
0.317
(1.0)
0.264
(0.8)
0.211
(0.6)
0.159
(0.4)
0.106
(0.2)
0.053
0
116 PSI
(8 bar)
58 PSI
(4 bar)
29 PSI
(2 bar)
26.4
(100)
52.8
79.3
105.7
(200)
(300)
(400)
Flow in GPM (L/min) →
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)
(300)
4351
(250)
3626
(200)
2901
(150)
2176
(100)
1450
(50)
725
0
Pressure differential in PSI (bar) →
Lowest set pressure in PSI (bar)
Outlet pressure in PSI (bar) →
LC 32 DR...7X
218
(15)
116 PSI
(8 bar)
(10)
26,4
(100)
52,8
79,3
105,7
132
158
(200)
(300)
(400)
(500)
(600)
145
58 PSI
(4 bar)
(5)
72,5
29 PSI
(2 bar)
0
26,4
52,8
79,3
105,7
132
158
(100)
(200)
(300)
(400)
(500)
(600)
Flow in GPM (L/min) →
(300)
4351
(250)
3626
(200)
2901
(150)
2176
(100)
1450
(50)
725
0
725
(50)
1450
2176
2901
3626
4351
(100)
(150)
(200)
(250)
(300)
Pilot oil flow in GPM (L/min) →
Outlet pressure in PSI (bar) →
Flow in GPM (L/min) →
(1,6)
0,423
(1,4)
0,37
(1,2)
0,317
(1,0)
0,264
116 PSI
(8 bar)
(0,8)
0,211
(0,6)
0,159
(0,4)
0,106
(0,2)
0,053
29 PSI
(2 bar)
0
26,4
52,8
79,3
105,7
132
158
(100)
(200)
(300)
(400)
(500)
(600)
58 PSI
(4 bar)
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
pa =
435 PSI (30 bar)
pe =
725 PSI (50 bar)
pe = 1886 PSI (130 bar)
measured at:
(200)
2901
(150)
2176
(100)
1450
(50)
725
0
52,8
(200)
105,7
158,5
(400)
(600)
211
238
(800) (900)
Pressure differential in PSI (bar) →
Lowest set pressure in PSI (bar)
3626
116 PSI (8 bar)
(250)
72,5 -PSI (5 bar)
4351
58 PSI (4 bar)
(300)
29 PSI (2 bar)
Outlet pressure in PSI (bar) →
LC 40 DR...6X
(15)
218
116 PSI
(8 bar)
(10)
145
58 PSI
(4 bar)
(5)
72,5
29 PSI
(2 bar)
0
52,8
105,7
158,5
(200)
(400)
(600)
(250)
3626
(200)
2901
(150)
2176
(100)
1450
(50)
725
0
725
1450
2176
2901
3626
4351
(50)
(100)
(150)
(200)
(250)
(300)
Inlet pressure in PSI (bar) →
Pilot oil flow in GPM (L/min) →
Outlet pressure in PSI (bar) →
4351
211
238
(800) (900)
Flow in GPM (L/min) →
Flow in GPM (L/min) →
(300)
72,5 PSI
(5 bar)
(3)
0,793
(2)
0,528
model 80
116 PSI
(8 bar)
model 40
58 PSI
(4 bar)
(1)
model 50
72,5 PSI
(5 bar)
0,264
model 20
29 PSI
(2 bar)
0
52,8
105,7
158,5
(200)
(400)
(600)
211
238
(800) (900)
Flow in GPM (L/min) →
measured at:
pa =
435 PSI (30 bar)
pe =
725 PSI (50 bar)
pe = 1886 PSI (130 bar)
45/66
RA 21 050/06.98
Operating curves, measured at ν = 190 SUS (41 mm2/s) and t = 122 °F (50°C)
(200)
2901
(150)
2176
(100)
1450
(50)
725
0
52,8
(200)
105,7
158,5
211
264 291
(400)
(600)
(800)
(1000) (1100)
Flow in GPM (L/min) →
(250)
4351
3626
(200)
2901
(150)
2176
(100)
(50)
1450
725
0
725
1450
2176
2901
3626
4351
(50)
(100)
(150)
(200)
(250)
(300)
Pilot oil flow in GPM (L/min) →
Outlet pressure in PSI (bar) →
(300)
(15)
218
(10)
145
Pressure differential in PSI (bar) →
Lowest set pressure in PSI (bar)
3626
116 PSI (8 bar)
(250)
72,5 -PSI (5 bar)
4351
58 PSI (4 bar)
(300)
29 PSI (2 bar)
Outlet pressure in PSI (bar) →
LC 50 DR...6X
(5)
72,5
116 PSI
(8 bar)
72,5 PSI
(5 bar)
58 PSI
(4 bar)
29 PSI
(2 bar)
0
52,8
(200)
105,7
158,5
211
264 291
(400)
(600)
(800)
(1000) (1100)
Flow in GPM (L/min) →
(4,0)
1,06
(3,5)
0,93
(3,0)
0,79
(2,5)
0,66
(2,0)
0,53
(1,5)
0,40
(1,0)
0,26
(0,5)
0,13
0
model 80
116 PSI
(8 bar)
model 50
72,5 PSI
(5 bar)
model 40
58 PSI
(4 bar)
model 20
29 PSI
(2 bar)
52,8
105,7
158,5
211
264 291
(200)
(400)
(600)
(800)
(1000) (1100)
Flow in GPM (L/min) →
Inlet pressure in PSI (bar) →
pa =
435 PSI (30 bar)
pe =
725 PSI (50 bar)
pe = 1886 PSI (130 bar)
measured at:
(150)
2176
(100)
1450
(50)
725
0
105,7
211
317
423 449
(400)
(800)
(1200)
(1600) (1700)
Outlet pressure in PSI (bar) →
Flow in GPM (L/min) →
(300)
4351
(250)
3626
(200)
2901
(150)
2176
(100)
1450
(50)
725
0
725
1450
2176
2901
3626
4351
(50)
(100)
(150)
(200)
(250)
(300)
Inlet pressure in PSI (bar) →
Pressure differential in PSI (bar) →
Lowest set pressure in PSI (bar)
2901
Pilot oil flow in GPM (L/min) →
3626
(200)
model 80
(250)
model 50
4351
model 40
(300)
model 20
Outlet pressure in PSI (bar) →
LC 63 DR...6X
(20)
290
(15)
218
(10)
145
(5)
72,5
model 80
model 50
model 40
model 20
0
105,7
211
317
(400)
(800)
(1200)
449
(1600) (1700)
Flow in GPM (L/min) →
(8,0)
2,11
(6,0)
1,59
(4,0)
1,06
(2,0)
0,53
model 80
model 50
model 40
0
model 20
105,7
211
317
(400)
(800)
(1200)
423
449
(1600) (1700)
Flow in GPM (L/min) →
measured at:
46/66
423
pa =
435 PSI (30 bar)
pe =
725 PSI (50 bar)
pe = 1886 PSI (130 bar)
RA 21 050/06.98
Compression springs (DR) for sizes 16 ... 63
Size
Part no.
Dimensions in inches
16
00062747
00062753
00062754
00062757
00082073
0.402/0.051 x 1.6/0.315
0.394/0.063 x 1.504/0.354
0.386/0.067 x 1.496/0.354
0.382/0.075 x 1.406/0.335
0.362/0.095 x 2.382/0.571
(Dimensions in mm) Model code
(10.2/1.3 x 40.5/8.0)
(10.0/1.6 x 38.2/9.0)
(9.8/1.7 x 38.0/9.0)
(9.7/1.9 x 35.7/8.5)
(9.2/2.4 x 60.5/14.5)
20
30
40
50
80 1)
25
00062762
00062764
00062820
00062819
00082072
0.602/0.089 x 2.165/0.315
0.587/0.106 x 2.102/0.335
0.579/0.11 x 2.106/0.335
0.575/0.118 x 2.067/0.335
0.555/0.138 x 3.091/0.472
(15.3/2.25 x 55.0/8.0)
(14.9/2.7 x 53.4/8.5)
(14.7/2.8 x 53.5/8.5)
(14.6/3.0 x 52.5/8.5)
(14.1/3.5 x 78.5/12.0)
20
30
40
50
80 1)
32
00062813
00062783
00062810
00062805
00082071
0.772/0.11 x 2.736/0.295
0.756/0.126 x 2.795/0.335
0.752/0.134 x 2.835/0.375
0.752/0.138 x 2.866/0.354
0.728/0.158 x 4.291/0.571
(19.6/2.8 x 69.5/7.5)
(19.2/3.2 x 71.0/8.5)
(19.1/3.4 x 72.0/9.5)
(19.1/3.5 x 72.8/9.0)
(18.5/4.0 x 109/14.5)
20
30
40
50
80 1)
40
00014032
00014033
00011119
00011119
0.953/0.158 x 2.461/0.256
0.949/0.167 x 2.677/0.295
0.898/0.221 x 5.512/0.61
0.898/0.221 x 5.512/0.61
(with washer 0.295)
(24.2/4 x 62.5/6.5)
(24.1/4.25 x 68/7.5)
(22.8/5.6 x 140/15.5)
(22.8/5.6 x 140/15.5)
(with washer 7.5)
20
40
50
80 1)
50
00014034
00014035
00015962
00015962
1.15/0.197 x 3.012/0.295
1.15/0.197 x 3.406/0.295
1.102/0.248 x 7.874/0.65
1.102/0.248 x 7.874/0.65
(with washer 0.551)
(29.2/5 x 76.5/7.5)
(29.2/5 x 86.5/7.5)
(28/6.3 x 200/16.5)
(28/6.3 x 200/16.5)
(with washer 14)
20
40
50 1)
80 1)
63
00014036
00014037
00011778
00011778
1.48/0.256 x 4.035/0.315
1.48/0.256 x 4.528/0.315
1.398/0.335 x 10.12/0.768
1.398/0.335 x 10.12/0.768
(with washer 0.551)
(37.6/6.5 x 102.5/8)
(37.6/6.5 x 115/8)
(35.5/8.5 x 257/19.5)
(35.5/8.5 x 257/19.5)
(with washer 14)
20
40
50 1)
80 1)
1)
These springs require an additional installation length.
When using standard control covers, an additional sandwich
plate LFA..D22-.. must be used.
Exception:
Control cover model "D" can be replaced by LFA..D8-../F
(no sandwich plate required).
Seal kits for cartridge valves
Seal kits for cartridge valves model LC..DR../.. (sizes 16 ... 63)
Seal kit
for
Part NBR
Part number
Part FPM
LC 16 DR..7X/...
LC 25 DR..7X/...
LC 32 DR..7X/...
00313104
00313105
00313106
00313107
00313108
00313109
Seal kit
for
Part NBR
Part number
Part FPM
LC 40 DR..6X/...
LC 50 DR..6X/...
LC 63 DR..6X/...
00314055
00314056
00314057
00314064
00314065
00314066
47/66
RA 21 050/06.98
Control cover for pressure reducing function
(main spool normally closed-LC..DB 40 D-../ – must be ordered separately)
General notes
1
2
3
4
5
6
7
LFA
= available
Nominal size
16
25
32
40
50
Adjuster
model
Page
Model
Series
63
Pressure rating in PSI
(bar) for model
...DR...
..DRW.
..DRE..
Seal
part
6X
7X
4
DR
53; 54
362.6 (025)
DRW
55; 56
1,088 (075)
DREV
57; 58
2,176 (150)
DREZ
57; 58
3,046 (210)
DREWV
59; 60
4,569 (315)
DREWZ
59; 60
5,076 (350)
Adjustment elements for pressure reducing
valves
1 = Handknob
2 = Screw adjustment with locknut & protective cap
3 = Lockable handknob with scale
(H lock to automotive industry standard)
4 = Handknob with scale
5
87 (006)
203 (014)
For ordering
see
pages
53 ... 60
Series code
6X = Serie 60 to 69 (60 to 69: externally
interchangeable)
7X = Series 70 to 79 (70 to 79: externally
interchangeable)
Seal kits see page 47
Attention:
Control covers model LFA..DR...
are combined with 2-way cartridge
valves models LC..DB40 D...
(for ordering code see page 5)
Pressure reducing function
Normally closed
M
e.g.
Model LFA..DR..
Model LC..DB40 D-../...
X**
F**
Z2
B
X
A
48/66
Y
RA 21 050/06.98
Control cover for pressure reducing function
(main spool normally closed-LC..DB 40 D-.. – must be ordered separately)
Technical data (for applications outside these parameters, please consult us!)
Mineral oil (HL, HLP) to DIN 51 524 1);
Fast bio-degradable pressure fluids to
VDMA 24 568 (also see RA 90 221); HETG 1);
HEPG (polyglycol) 2); HEES (synthetic ester) 2);
other fluids on request
Pressure fluid
1)
2)
suitable for NBR and FPM seals
only suitable for FPM seals
°F (°C)
Pressure fluid - temperature range
– 22 to + 176 (– 30 to + 80) (NBR seals)
– 4 to + 176 (– 20 to + 80) (FPM seals)
mm2/s
Viscosity range
Degree of fluid contamination
35 to 1760
Maximum permissible degree of contamination of the fluid is
to NAS 1638 class 9. We, therefore, recommend a filter with a
minimum retention rate of von ß10 ≥ 75.
Control cover
Control cover model
Max. operating
pressure at port ...
LFA..DR.-../...
LFA..DRW.-../...
4,569 PSI (315 bar)
...X (primary pressure)
LFA..DRE..-../...
4,569/5,076 PSI
(315/350 bar)
4,569/5,076 PSI
(315/350 bar)
...Y (secondary pressure = max. set pressure)
at zero pressure (up to ≈ 29 PSI (2 bar)
When controlling pressure
...Z2
870 PSI (60 bar)
Static
at zero pressure
(up to ≈ 29 PSI (2 bar)
When controlling pressure
...T
Static
4,569 PSI (315 bar)
1,450 PSI (100 bar) (DBET)
4,569 PSI (315 bar) (DBETR)
(corresponds to permissible tank
pressure of pilot valves)
Notes on pilot valves (not included with the scope of supply, must be ordered separately)
Directional spool valve (porting pattern form A 6 to DIN 24 340)
Directional spool valve
model
Size
3WE 6 A-../...
6
3WE 6 B9 -../...
6
Data sheet
RA no.
23 178
Control cover
model
DREWV, DREWZ
DRW
Proportional pressure relief valve
Proportional pressure valve
Size
model
1)
Data sheet
RA no.
Control cover
model
DBET-5X/...1)Y G24-1
6
29 165
DREV, DREWV
DBETR-1X/...2)Y 409
6
29 166
DREZ, DREWZ
Possible pressure ratings 725, 1450, 2900, 4569,
5076 PSI (50, 100, 200, 315,
350 bar)
2) Possible pressure ratings 363, 1160, 2611, 3336,
4569 PSI (25, 80, 180, 230,
315 bar)
Valve mounting bolt are included within the control
cover scope of supply.
49/66
RA 21 050/06.98
Control cover for pressure reducing function
(main spool normally closed-LC..DB 40 D-.. – must be ordered separately)
Summary of symbols (basic symbols) - defined symbols are shown in the following model description
LFA..DR.-.../...
Sizes 16... 63
A
B
P
T
LFA..DRW.-.../...
Sizes 16...63
a
M
Control cover with
manual pressure
adjustment
Control cover with
manual pressure
adjustment
and isolating function
D**
X
M
F**
Z2
B
X
Y
3WE 6 B9-../..
Solenoid de-energized
closed solenoid
energized
pressure reducing
function
D**
X
F**
A
Z2
B
X
Y
A
see pages 53; 54
T
see pages 55; 56
LFA..DREV-.../...
Sizes 25... 63
A
B
P
T
LFA..DREWV-.../...
Sizes 25...63
a
Control cover for
electrical-proportional
pressure adjustment
P
P
T
Control cover for
electrical-proportional
pressure adjustment
and isolating function
T
Port T - zero pressure
Port T zero pressure
E**
T
E**
P
A
T
A
3WE 6 A-../..
Solenoid de-energized
closed solenoid
energized
pressure reducing
function
D**
D**
X
X
F**
F**
Z2
B
X
Z2
B
X
Y
A
Y
A
see pages 59; 60
see pages 57; 58
T
T
LFA..DREZ-.../...
Sizes 25... 63
Control cover for
electrical-proportional
pressure adjustment
P
A
B
P
T
LFA..DREWZ-.../...
Sizes 25...63
a
T
Control cover for
electrical-proportional
pressure adjustment
and isolating function
T
Port T - zero pressure
B**
P T
Port T - zero pressure
B**
E**
B A
P
Z1
T
E**
B A
D**
D**
X
X
F**
Z2
X
F**
B
Y
Z2
X
Z1
A
A
see pages 57; 58
B
Y Z1
Z1
3WE 6 A-../..
Solenoid de-energized
closed solenoid
energized
pressure reducing
function
see pages 59; 60
The orifices built into the control covers are installed orifices. These are standard orifices. No model is entered
in the ordering code.
Orifice shown within the main symbol
50/66
RA 21 050/06.98
Dimensions of R-rings for ports X, Y, Z1, Z2 (included within the scope of supply)
Size
Dimensions in inches
(Dimensions in mm)
16
25
32
40, 25
63
80
100
0.331 x 0.055 x 0.070
0.386 x 0.059 x 0.070
0.440 x 0.063 x 0.070
0.504 x 0.095 x 0.103
0.737 x 0.103 x 0.103
1.046 x 0.139 x 0.139
1.359 x 0.139 x 0.139
(8.41 x 1.40 x 1.78)
(9.81 x 1.50 x 1.78)
(11.18 x 1.60 x 1.78)
(12.81 x 2.40 x 2.62)
(18.72 x 2.62 x 2.62)
(26.57 x 3.53 x 3.53)
(34.52 x 3.53 x 3.53)
Part number
NBR
FPM
00025407
00017453
00017455
00017457
00024445
00017466
00017472
00025408
00017610
00017611
00017617
00024446
00017630
00017633
Seal kits for control covers model LFA../.. (sizes 16 ... 63)
Size
Seal kit for LFA...
..DR..1)
..DRW..1)..
NBR
FPM
pilot ..DR6..
control
cover
Part number
25
16
NBR
FPM
32
NBR
FPM
00311273 (NBR) 00311276 (FPM)
...DR...
LFA..DRW..
00313702
00313701
pilot ..ZDR6..
00313703
00313704
00313705
00313706
00313887
00313888
00314298 (NBR) 00314299 (FPM)
DREV..;..DREWV..
00313885
00313886
..DREZ..;..DREWZ..
Size
NBR
Seal kit for LFA...
..DR..1)
..DRW..1)..
pilot ..DR6..
control
cover
..DREZ..;..DREWZ..
FPM
63
NBR
FPM
00311273 (NBR) 00311276 (FPM)
...DR...
LFA..DRW..
00313889
pilot ..ZDR6..
DREV..;..DREWV..
Part number
50
NBR
FPM
40
2)
00313890
00313889
00313890
00313891
00313892
00313883
00313884
00314298 (NBR) 00314299 (FPM)
00313881
00313881
00313882
00313882
1)
The seals for the pilot valves (DR6..., ZDR...) are not included within the seal kit of the control cover.
2)
For pilot valve seal kits, see relevant data sheet.
Mounting bolts (included within the scope of supply)
S.H.C.S. to DIN 912-10.9
Size
Qty.
Dimensions
Tightening
torque
in lb-ft (Nm)
16
4
5/16" x 1-3/4"/M8 x 45
23.6 (32)
25
4
1/2" x 2"/M12 x 50
81.13 (110)
32
4
5/8" x 2-1/4"/M16 x 60
199.14 (270)
40
4
3/4" x 2-3/4"/M20 x 70
383.5 (520)
50
4
7/8" x 3-1/4"/M20 x 80
383.5 (520)
63
4
1-1/4" x 4"/M30 x 100
1,328 (1,800)
51/66
RA 21 050/06.98
Control covers for models DR, DRW, DREV, DREZ, DREWV and DREWZ:
dimensions in inches (millimeters)
Sizes 16...32
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
0.158 (4)
1.38 (35)
0.079 (2)
L2
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
4
3.1
7.09 (180)
9
9
3.7 (94)
D
4
10
A
F
X
4
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
14
0.158 (4)
L2
A
Y
L4
L3
T
Z2
0.158 (4)
1.22 (31)
L1
B
X
L6
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
1.6 (40.5)
L5
9
2
3.2
10
F
Z2
H3
Y
H4
F
X
H5
H1
D
H2
Z2
Y
3.1
3.2
SAE-12; 1-1/16-12
[G3/4; 0.63 (16)]
3.1
L7
0.158 (4)
G1/2; 0.55 (14)
0.158 (4)
SAE-8; 3/4-16
[G1/2; 0.55 (14)]
Z1
4
Port X optionally as threaded port (for sizes 16...50)
Port Y optionally as threaded port (for sizes 40, 50)
Port Z1 optionally as threaded port (for LFA..DREZ.., LFA..DREWZ..., sizes 25..63)
Port Z2 optionally as threaded port (for sizes 40, 50, 63)
Locating pin
Name plate
Check valve (for sizes 63 orifice F in poppet)
For control cover size 63 logic element size 16
52/66
Ø 0.079 (2.0)
1.26 (32)
3.23 (82)
Y
P
1
2
3.1
3.2
4
9
10
11
3.56 (90.3)
2.95 (75) 1.6 (40.5)
11
only Size 16
Sizes 40, 50
1.22 (31)
Y
1.97 (50)
H1
F
H3
H2
D
F
A
Z2
1
not Size 16
X
B
T
0.158 (4)
1.6 (40.5)
SAE-6; 9/16-18
[G1/4; 0.47 (12)]
D
X
1.87 (47.5)
L3
2.56 (65)
Z2
Y
3.19 (81)
T
A
X
1.28 (32.5)
P
1.22 (31)
Z1
P
B
L6
Ø 0.059 (1.5)
Z1
L7
1.28 (32.5)
Ø 0.071 (1.8)
L1
0.158 (4)
4
Size 63
Size 16
25
32
40
H1 1.575 1.575 1.969 2.362
(40)
(40) (50)
(60)
H2 0.669 0.748 1.024 1.181
(17)
(19) (26)
(30)
H3 0.591 0.945 1.102 1.26
(15)
(24) (28)
(32)
H4
1.575
(40)
H5
1.575
(40)
L1 2.559 3.347 3.397 4.921
(65)
(85) (100) (125)
L2 3.15 3.347 3.397 4.921
(80)
(85) (100) (125)
L3 1.437 1.929 2.224 2.835
(36.5) (49) (56.5) (72)
L4
2.461
(62.5)
L5
2.461
(62.5)
L6 0.276 0.925 1.221 1.713
(7) (23.5) (31) (43.5)
L7 0.669 1.063 1.359 1.85
(17)
(27) (34.5) (47)
50
2.677
(68)
1.26
(32)
1.339
(34)
1.26
(32)
1.26
(32)
5.512
(140)
5.512
(140)
3.15
(80)
2.756
(70)
2.756
(70)
2.008
(51)
2.146
(54.5)
RA 21 050/06.98
Control cover for pressure reducing function
(main spool normally closed-LC..DB 40 D-../.. – must be ordered separately)
Sizes 16 ... 63
1
2
LFA
3
4
5
6
7
DR
12 =
Nominal size 16 series
Nominal size 25
7X
Nominal size 32
Nominal size 40
series
Nominal size 50
6X
Nominal size 63
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
= 16
= 25
= 32
= 40
= 50
= 63
No code =
V=
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Adjustment element
Rotary knob
Hexhead nut with protective cap
Lockable rotary knob with scale
Rotary knob with scale
1)
NBR seals
FPM seals
(other seals on request)
=1
=2
= 3 1)
=4
025
075
150
210
315
H key with ordering code. 008158
included within the scope of supply
=
Max. secondary pressure 362 PSI (25 bar)
= Max. secondary pressure 1,088 PSI (75 bar)
= Max. secondary pressure 2,176 PSI (150 bar)
= Max. secondary pressure 3,046 PSI (210 bar)
= Max. secondary pressure 4,569 PSI (315 bar)
6X =
7X =
P
T
Series 6X (sizes 40 to 63)
Series 7X (sizes 16 to 32)
M
A
P
D**
T
M
A
D**
X
X
X**
Y
Z2
B
X
F**
Z2
B
X
A
A
LFA..DR.-7X/..
Sizes 25,32
LFA..DR.-7X/..
Size 16
P
Y
T
M
A
P
T
M
A
A**
D**
Z2
Y
X
F**
Z2
B
X
A
LFA..DR.-6X/..
Sizes 40,50
D**
Y
F**
Z2
B
X
Z2
Y
A
LFA..DR.-6X/..
Size 63
53/66
RA 21 050/06.98
Control cover for pressure reducing function (main spool normally closed-LC..DB 40 D-../.. –
must be ordered separately): dimensions in inches (millimeters)
1.77 (45)
16
11
L6
B
P
1.22 (31)
L8
A
T
L7
Z2
8
5.1
5.2
13
L12
L11
0.71 (18)
3
5 4
2
3
1
2 1
1.97 (50)
L9
Ø 1.38 (35)
0.49 (12.5)
Ø 1.58 (40)
12
Ø 1.54 (39)
6
L10
15
7
** Orifice - Ø
X
Y
Size
16
F**
14
32
40
50
63
0.039 0.047
(1.0) (1.2)
0.059 0.059
(1.5) (1.5)
X**
0.098
(2.5)
D**
0.032
(0.8)
0.118
(3.0)
0.118 0.118
(3.0) (3.0)
0.118 0.118
(3.0) (3.0)
.../315 0.032
.../315 (0.8)
0.071
(1.8)
0.071 0.118
(1.8) (3.0)
0.118 0.118
(3.0) (3.0)
5.1 Adjustment "4"
5.2 Adjustment "3"
25
0.032
(0.8)
A**
0.079
(2.0)
6
Adjustment "2"
7
Adjustment "1"
L6
8
Direct operated pressure reducing valve
(included within the scope of supply)
0.276
(7)
0.925
(23.5)
1.221 1.713
(31) (43.5)
2.001 2.953
(51)
(75)
L7
9
Name plate for pressure reducing valves
0.669
(17)
1.063
(27)
1.358
(34.5)
1.85
(47)
2.146 3.555
(54.5) (90.3)
L8
0.866
(22)
0.217
(5.5)
.../315 1.201
.../315 (30.5)
0.551
(14)
4.705
(119.5)
5.158 4.862 4.37
(131) (123.5) (111)
4.075 3.445
(103.5) (87.5)
.../315 4.587
.../315 (116.5)
5.039 4.744 4.252
(128) (120.5) (108)
3.957 3.327
(100.5) (84.5)
5.65
(143.5)
6.102 5.847 5.315
(155) (148.5) (135)
5.059 4.39
(128.5) (111.5)
.../315 5.532
.../315 (140.5)
5.984 5.728 5.197
(152) (145.5) (132)
4.941 4.272
(125.5) (108.5)
4.37
(111)
4.075 3.583
(103.5) (91)
3.287 2.658
(83.5) (67.5)
4.252 3.957 3.465
(108) (100.5) (88)
3.169 2.539
(80.5) (64.5)
4.37
(111)
4.075 3.583
(103.5) (91)
3.287 2.658
(83.5) (67.5)
4.252 3.957 3.465
(108) (100.5) (88)
3.169 2.539
(80.5) (64.5)
11 Valve mounting bolts M5x50 DIN 912-10.9
MA = 6.56 lb-ft (8.9 Nm) are within the control
cover scope of supply
12 Pressure gauge port SAE-6; 9/16-18
[G 1/4, 0.47 (12)] deep; Socket bolt 6 A/F
L9
13 Space required to remove key
14 Control cover, see page 52
15 Lock nut 24 A/F
16 For model .../315 → 1.969 (50 mm)
L10
A/F = Across Flats
L11
3.918
(99.5)
.../315 3.799
.../315 (96.5)
L12
3.918
(99.5)
.../315 3.799
.../315 (96.5)
54/66
0.236
(6)
RA 21 050/06.98
Control cover for pressure reducing and isolating function
(main spool normally closed-LC..DB 40 D-../.. – must be ordered separately)
Sizes 16 ... 63
1
2
LFA
3
4
5
6
7
DRW
12 =
Nominal size 16
Nominal size 25
Nominal size 32
Nominal size 40
Nominal size 50
Nominal size 63
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
= 16
= 25
= 32
= 40
= 50
= 63
series
7X
series
6X
No code =
V=
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Adjustment mechanism
Handknob
Screw adj. with locknut & protective cap
Lockable handknob with scale
Handknob with scale
1)
=1
=2
= 3 1)
=4
H key with ordering no. 008158 included within
the scope of supply
A
a
P
025
075
150
210
=
Max. secondary pressure 362 PSI (25 bar)
= Max. secondary pressure 1,088 PSI (75 bar)
= Max. secondary pressure 2,176 PSI (150 bar)
= Max. secondary pressure 3,046 PSI (210 bar)
6X =
7X =
Series 6X (sizes 40 to 63)
Series 7X (sizes 16 to 32)
3WE 6 B9 ../…
De-energized - closed
Solenoid energized - pressure
reducing function
B
T
NBR seals
FPM seals
(other seals on request)
a
A
B
P
T
P
T
M
M
D**
A
D**
X
X
X**
F**
X**
Y
Z2
B
X
A
A
LFA..DRW.-7X/..
Sizes 25, 32
LFA..DRW.-7X/..
Size16
a
Y
Z2
B
X
A
B
P
T
P
T
3WE 6 B9 ../…
a
De-energized - closed
Solenoid energized - pressure
reducing function
A
B
P
T
P
T
M
M
A
D**
Z2
Y
F**
Z2
B
X
Y
A
LFA..DRW.-6X/..
Size 40, 50
A**
D**
X
F**
Z2
B
X
Z2
Y
A
LFA..DRW.-6X/..
Size 63
55/66
RA 21 050/06.98
Control cover for pressure reducing and isolating function (main spool normally closed
LC..DB 40 D-../.. – must be ordered separately): dimensions in inches (millimeters)
L8
L6
B
P
5.1 5.2
1.22 (31)
1.77 (45)
16
A
T
L12
L11
L10
L7
Z2
L9
11
1
2 1
Ø 1.54 (39)
3
Ø 1.38 (35)
2
Ø 1.58 (40)
3
5 4
1.58 (40)
0.71 (18)
12
9
8
14
X
Y
** Orifice - Ø
Size
13
15
16
32
40
50
0.098
(2.5)
0.032
(0.8)
0.039
(1.0)
0.047
(1.2)
0.059
(1.5)
0.059
(1.5)
0.032
(0.8)
0.118
(3.0)
0.118
(3.0)
0.118
(3.0)
0.118
(3.0)
0.118
(3.0)
0.032
(0.8)
0.071
(1.8)
0.071
(1.8)
0.118
(3.0)
0.118
(3.0)
0.118
(3.0)
L6
0.276
(7)
0.925
(23.5)
1.221
(31)
1.713
(43.5)
2.001
(51)
2.953
(75)
L7
0.669
(17)
1.063
(27)
1.358
(34.5)
1.85
(47)
2.146
(54.5)
3.555
(90.3)
L8
0.866
(18)
0.079
(2.0)
1.201
(30.5)
0.551
(14)
D**
5.1 Adjustment "4"
.../315
.../315
5.2 Adjustment "3"
6
Adjustment "2"
7
Adjustment "1"
8
Direct operated pressure reducing valve
(included within the scope of supply)
9
Name plate for pressure reducing valve
11
Valve mounting bolts M5x90 DIN 912-10.9
MA = 6.56 lb-ft (8.9 Nm) are within the control
cover scope of supply
12
13
Pressure gauge port SAE-6; 9/16-18
[G 1/4, 0.47 (12)] deep; Socket bolt 6 A/F
Space required to remove key
14
Control cover, see page 52
15
Lock nut 24 A/F
16
For model .../315 →
63
0.079
(2.0)
F**
.../315
.../315
L9
0.236
(6)
4.862 5.315
5.02
4.528 4.232 3.602
(123.5) (135) (127.5) (115) (107.5) (91.5)
.../315 4.587 5.039 4.744 4.252 3.957 3.327
.../315 (116.5) (128) (120.5) (108) (100.5) (84.5)
5.807 6.26
(147.5) (159)
L10
6.004 5.472 5.098 4.429
(152.5) (139) (129.5) (112.5)
.../315 4.075 5.984 5.728 5.197 4.941 4.272
.../315 (140.5) (152) (145.5) (132) (125.5) (108.5)
L11
1.97 inches (50 mm)
4.074 4.528 4.232
(103.5) (115) (107.5)
.../315
.../315
L12
3.799
(96.5)
3.74
(95)
3.445
(87.5)
2.815
(71.5)
4.252 3.957 3.465
(108) (100.5) (88)
3.169
(80.5)
2.539
(64.5)
3.74
(95)
3.445
(87.5)
2.815
(71.5)
4.252 3.957 3.465
(108) (100.5) (88)
3.169
(80.5)
2.539
(64.5)
4.074 4.528 4.232
(103.5) (115) (107.5)
.../315
.../315
56/66
7
A**
X**
A/F = Across Flats
25
6
3.799
(96.5)
RA 21 050/06.98
Control cover for pressure reducing functions -- electrical - proportional
(main spool normally closed-LC..DB 40 D-../.. – must be ordered separately)
Sizes 25 ... 63
1
2
3
5
6
7
LFA
Size 25
Size 32
series
7X
= 25
= 32
Size 40
Size 50
Size 63
series
6X
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
= 40
= 50
= 63
No code =
V=
Pressure reducing function, electrical-proportional } DREV
Pressure reducing function, electrical-proportional
DREZ
and possiblity for 2-way flow control function
}
Series 6X (sizes 40 to 63)
Series 7X (sizes 25, 32)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
= 6X
= 7X
006 =
014 =
T
P
T
Pressure ratings (pressure reducing valve)
101 PSI (7.0 bar) (only for DREV)
2332 PSI (16.0 bar) (only for DREZ)
T
A
P
D**
T
T
A
P
D**
Z2
F**
F**
Z2
B
X
A
T
B
A
LFA..DREV-6X/006
Size 63
P
T
B
A
D**
X
F**
F**
Z2
B
Y
A
LFA..DREZ-7X/014
Sizes 25, 32
Z1
Y
T
Z1
X
Z2
A
LFA..DREV-6X/006
Sizes 40, 50
D**
X
Z2
B
X
Y
T
P
F**
A
LFA..DREV-7X/006
Sizes 25, 32
A**
X
Y
Z2
B
X
Y
T
D**
X
X
NBR seals
FPM seals
(other seals on request)
Z2
B
X
T
Z1
Z1
Z2
X
P
Y
A
LFA..DREZ-6X/014
Sizes 40, 50
A**
F**
Y
Z1
T B
D**
X
Z1
Z2
B
Z2
Y
A
LFA..DREZ-6X/014
Sizes 63
57/66
RA 21 050/06.98
Control cover for pressure reducing function–electrical - proportional (main spool normally
closed-LC..DB 40 D-../.. – must be ordered separately): dimensions in inches (mm)
Sizes 25 ... 63
8
L2
L8
11 Valve mounting bolts M5 DIN 912-10.9
MA = 6.56 lb-ft (8.9 Nm) included within the scope
of supply
1.6 (40.5)
L6
Pressure reducing valve (included within the
scope of supply)
14 Control cover, see page 52
16 Proportional pressure relief valve 1)
DBET-5X/...1)Y G24-12)
DBETR-1X/...1)Y 4092)
(must be ordered separately)
T
1.22 (31)
Z2
L7
P
B
A
X
Y
L1
1.28 (32.5)
Z1
1)
Pressure rating for valve models:
DBET-5X/... 725, 1,450, 2,900, 4,569 and
5,076 PSI; (50, 100, 200, 315 and 350 bar)
DBETR-1X/... 363, 1,160, 2,611, 3,336, and
4,569 PSI (25, 80, 180, 230 and 315 bar)
2)
= G 1/4 threaded port T
5.59 (142)
2)
G1/4; 0.47 (12)
3.39 (86)
1.52 (38,5)
T
16
1.97 (50)
11
8
A
14
X
Z1
Y
Z2
**Orifice - dia.
Size
F**
D**
L1
L2
L6
L7
L8
25
A**
0.032 (0.8)
0.059 (1.5)
3.347 (85)
3.347 (85)
0.925 (23.5)
1.063 (27)
0.591 (15)
32
0.039 (1.0)
0.059 (1.5)
3.937 (100)
3.937 (100)
1.221 (31)
1.358 (34.5)
0.295 (7.5)
40
0.047 (1.2)
0.071 (1.8)
4.921 (125)
4.921 (125)
1.713 (43.5)
1.85 (47)
0.059 (1.5)
0.071 (1.8)
5.512 (140)
5.512 (140)
2.008 (51)
2.146 (54.5)
0.059 (1.5)
0.071 (1.8)
7.087 (180)
7.087 (180)
2.953 (75)
3.555 (90.3)
50
63
58/66
0.079 (2.0)
RA 21 050/06.98
Control cover for pressure reducing function and isolating function -- electrical-proportional
(main spool normally closed-LC..DB 40 D-../.. – must be ordered separately)
Sizes 25 ... 63
1
2
3
5
6
7
LFA
Size 25
Size 32
= 25
= 32
series
7X
Size 40
Size 50
Size 63
series
6X
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
= 40
= 50
= 63
}
Pressure reducing function, electricalproportional and isolating function, including}
possiblity for 2-way flow control function
Pressure reducing function,
electrical-proportional and isolating function
No code =
V=
= DREWV
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
= DREWZ
Series 6X (sizes 40 to 63)
Series 7X (sizes 25 and 32)
NBR seals
FPM seals
(other seals on request)
= 6X
= 7X
006 =
014 =
Pressure ratings (pressure reducing valve)
101 PSI (7.0 bar) (only for DREV)
2332 PSI (16.0 bar) (only for DREZ)
De-energized - closed
3WE 6 A../... Solenoid energized - pressure reducing function
T
T
P
T
P
P
B
T
B
T
B
T
A
P
A
P
A
P
a
a
P
T
P
A
D**
T
A
P
D**
X
Z2
X
F**
F**
Z2
B
X
A
A
LFA..DREWV-7X/006
Sizes 25, 32
A**
X
F**
Y
Z2
B
X
Y
T
D**
Z2
Z2
B
X
Y
A
LFA..DREWV-6X/006
Size 40, 50
Y
LFA..DREWV-6X/006
Size 63
De-energized - closed
3WE 6 A../... Solenoid energized - pressure reducing function
T
T
P
T
P
P
B
T
B
T
B
T
A
P
A
P
A
P
a
a
P
T
B
A
P
Z1
D**
T
B
A
Z1
Z2
D**
X
X
F**
F**
Z2
B
X
Y
A
LFA..DREWZ-7X/014
Sizes 25, 32
Z1
Z2
B
X
P
Z1
X
Z1
A
LFA..DREWZ-6X/014
Sizes 40, 50
A**
F**
Y
Y
T
D**
X
Z2
B
Z1
Z2
Y
A
LFA..DREWZ-6X/014
Size 63
59/66
RA 21 050/06.98
Control cover for pressure reducing function and isolating function–electrical-proportional
(main spool normally closed-LC..DB 40 D-../.. – must be ordered separately): dimensions in inches (millimeters)
Sizes 25...63
Directional spool valve 4 WE 6..
8
Z1
B
A
Y
Z2
L8
L6
14 Control cover, see page 52
16 Proportional pressure relief valves1)
DBET-5X/...1)Y G24-12)
DBETR-1X/...1)Y 4092) (must be ordered
separately)
L7
T
11 Valve mounting bolts M5 DIN 912-10.9
MA = 6.56 lb-ft (8.9 Nm) are included within the
control cover scope of supply
1.22 (31)
L1
P
X
1)
Pressure rating for valve models:
DBET-5X/... 725, 1,450, 2,900, 4,569 and
5,076 PSI (50, 100, 200, 315 and 350 bar)
DBETR-1X/... 363, 1,160, 2,611, 3,336, and
4,569 PSI (25, 80, 180, 230 and 315 bar)
2)
= G 1/4 threaded port T
1.59 (40.5)
L2
1.52 (38.5)
11
Pressure reducing valve (included within the
scope of supply)
G 1/4; 0.47 (12)
2)
L9
16
8
T
1.97 (50)
14
1.97 (50)
11
X
Y
Z1
Z2
5.59 (142)
**Orifice - dia.
Size
F**
D**
L1
L2
L6
L7
L8
L9
25
0.032 (0.8)
0.059 (1.5)
3.347 (85)
3.347 (85)
0.925 (23.5)
1.063 (27)
0.591 (15)
0.512 (13)
32
0.039 (1.0)
0.059 (1.5)
3.937 (100) 3.937 (100)
40
0.047 (1.2)
0.071 (1.8)
4.921 (125) 4.921 (125) 1.713 (43.5)
1.85 (47)
1.339 (34)
50
0.059 (1.5)
0.071 (1.8)
5.512 (140) 5.512 (140)
2.008 (51)
2.146 (54.5)
1.634 (41.5)
0.059 (1.5)
0.071 (1.8)
7.087 (180) 7.087 (180)
2.953 (75)
3.555 (90.3)
2.579 (65.5)
63
60/66
A**
0.079 (2.0)
1.221 (31)
1.358 (34.5) 0.295 (7.5) 0.807 (20.5)
RA 21 050/06.98
Pressure sequencing functions
General information regarding control cover for pressure sequencing function
1
2
3
4
5
6
7
8
LFA
= available
Nominal size
16 25
32
40
Model
Page
Adjuster Series
model
50
Max. settable
sequencing
pressure in
PSI (bar)
Pilot oil
supply
Seal
part
6X
on request
63; 64
DZ
DZWA
DZWB
65; 66
Ajustment model for pressure sequence valves
1 = Handknob
2 = Screw adjustment with locknut & protective cap
3 = Lockable handknob with scale
(H lock to automotive industry standard)
4 = Handknob with scale not lockable
4
Series code
6X = Series 60 to 69 (60 to 69: externally interchangeable)
5
7X = Series 70 to 79 (70 to 79: externally interchangeable)
7
Pilot oil supply
No code =
X=
Y=
XY =
For seal kits see page 62
Attention:
Control covers, model LFA..DZ...
are combined with 2-way cartridge valves
model LC..DB...
(for ordering code, see page 5)
4WE 6 D../..
6
23 178
Ordering code according to
symbol
(see pages 63 and 65)
The orifices built into the control cover are installed orifices. These
are standard orifices. No model is entered in the ordering code.
Orifice shown within the main symbol
Directional spool valve
(porting pattern to DIN 24 340 form A6)
Directional spool valve
Data sheet
model
RA no.
Size
For ordering
codes
see pages
63 and 65
3,046 (210)
4,569 (315)
5,076 (350)
Attention: Pilot valves (electrical directional spool valves model
4WE 6 D...) must be ordered separately, for further details see
data sheet!
Valve mounting bolts 10-24 x 2" (M5 x 50) DIN 912-10.9,
MA = 6.56 lb-ft (8.9 Nm) are included within the control cover
scope of supply.
Control cover
model
DZWA, DZWB
Summary of symbols (basic symbols) - defined symbols are shown in the following model description
Control cover with manual pressure adjustment and
pressure-dependent or pressure-independent sequence function
4 WE 6 D ../...
A
Control cover with manual
pressure adjustment
X
B
A
Z2
Z1
B
P
Y
210
LFA..DZ.-../ 315
350
A
B
P
T
a
a
T
Z2
X
B
A
Z1
Y
210
LFA..DZWA.-../ 315
350
Solenoid de-energized: sequencing function
X
B
A
Z2
Z1
Y
210
LFA..DZWB.-../ 315
350
Solenoid energized: sequencing function
61/66
RA 21 050/06.98
Control cover, Technical data (for applications outside these parameters, please consult us!)
Mineral oil (HL, HLP) to DIN 51 524 1); Fast bio-degradable
pressure fluids to VDMA 24 568 (also see RA 90 221);
HETG 1); HEPG (polyglycol) 2); HEES (synthetic ester) 2);
other fluids on request
Pressure fluid
1)
2)
suitable for NBR and FPM seals
only suitable for FPM seals
Pressure fluid - temperature range
F (°C)
– 22 to + 176 (– 30 to + 80) (NBR seals)
– 4 to + 176 (– 20 to + 80) (FPM seals)
SUS (mm2/s)
Viscosity range
35 to 1760 (2.8 to 380)
Degree of contamination
Maximum permissible degree of contamination of the fluid is
to NAS 1638 class 9. We, therefore, recommend a filter with
a minimum retention rate of ß10 ≥ 75.
Control cover
LFA.. DZW. ../...
/....
/...Y
/...X
/...XY
4,569 PSI (315 bar)
Control cover model
Max. permissble
operating pressure at port...
LFA.. DZ ../...
...X; ...Z2
zero pressure (up to ≈ 29 PSI (2 bar)
When controlling pressure
...Y
zero pressure (up to ≈ 29 PSI (2 bar)
When controlling pressure
...Z1
3,046 PSI (210 bar) (=)1)
2,321 PSI (160 bar) (~)1)
4,569 PSI (315 bar)
Static
3,046 PSI (210 bar) (=)1) 4,569 PSI
2,321 PSI (160 bar) (~)1) (315 bar)
4,569 PSI (315 bar)
Static
Settable sequencing
pressure
3,046 PSI (210 bar)
4,569 PSI (315 bar)
5,076 PSI (350 bar)
1)
max. permissible values 4WE 6 D
Dimensions of R-rings for ports X, Y, Z1, Z2 (included within the scope of supply)
Size
Dimensions
in inches
(Dimensions
in mm)
NBR
Part number
FPM
16
0.331 x 0.055 x 0.07
(8.41 x 1.40 x 1.78)
00025407
00025408
25
0.386 x 0.059 x 0.07
(9.81 x 1.50 x 1.78)
00017453
00017610
32
0.44 x 0.063 x 0.07
(11.18 x 1.60 x 1.78)
00017455
00017611
40, 50
0.504 x 0.095 x 0.103
(12.81 x 2.40 x 2.62)
00017457
00017617
Seal kits for cartridge valves and control covers
Seal kits for control covers
model LFA.. /... (sizes 25 ... 50)
Seal kits for cartridge valves
model LC.. DB../... (sizes 16 ... 50)
Part number
Part number
Seal kit
for
NBR
00313104
00313105
00313106
00314055
00314056
LC16DB..7X/..
LC25DB..7X/..
LC32DB..7X/..
LC40DB..6X/..
LC50DB..6X/..
FPM
00313107
00313108
00313109
00314046
00314065
Seal kit
for
Size 25
NBR
FPM
...DZ...
00311540
...DZW...
NBR
00311541
FPM
Size 40
NBR
00311542
FPM
Size 50
NBR
00311542
Orifices thread size
Mounting bolts
S.H.C.S. to DIN 912-10.9 (included within the scope of supply)
Size
Qty.
Dimensions
16
4
5/16" x 4-1/2"/M8 x 115
23.6 (32)
25
4
1/2" x 4-3/4"/M12 x 120
81.13 (110)
32
4
5/8" x 4-3/4"/M16 x 120
199.14 (270)
40
4
3/4" x 2-3/4"/M20 x 70
383.5 (520)
50
4
7/8" x 3-1/4"/M20 x 80
383.5 (520)
62/66
Size 32
Tightening torque
in lb-ft (Nm)
All built-in orifices: M6 tapered
FPM
RA 21 050/06.98
Control cover for pressure sequencing functions
Sizes 16... 50
2
1
3
LFA
Nominal size 16
Nominal size 25
Nominal size 32
Nominal size 40
Nominal size 50
DZ
4
5
series
6X
7
8
6X
= 16
= 25
= 32
= 40
= 50
on
request
6
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
No code =
V=
NBR seals
FPM seals
(other seals on request)
Adjustment
Rotary knob
= 1
Hexhead nut with protective cap
= 2
Lockable rotary knob with scale
= 3
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
Pilot oil supply
(H lock to automotive industry standard)
Pilot oil
supply
= 4
Rotary knob with scale not lockable
Series 6X
= 6X
Pressure ratings (max. settable sequencing pressure)
3,046 PSI (210 bar)
4,569 PSI (315 bar)
5,076 PSI (350 bar)
X**
X
S**
B
Z2
Z**
Z1
= 210
= 315
= 350
No code
X
Y
XY
=
=
=
=
Y**
Y
X
Z**
S**
B
internal
internal
external
external
Z2
Z1
S**
B
Z2
A
210
LFA...DZ.-../ 315 X
350
Z**
Z1
Y**
Y
Port Z2 not
available in
size 32
A
210
LFA...DZ.-../ 315
350
X
internal
external
internal
external
X**
A
X**
Pilot oil
drain
210
LFA...DZ.-../ 315 Y
350
Y**
Y
X**
X
S**
B
Z2
Z**
Z1
Y**
Y
A
210
LFA...DZ.-../ 315 XY
350
63/66
RA 21 050/06.98
Control cover for pressure sequencing functions: dimensions in inches (millimeters)
3,046 PSI (210 bar)
Adjustment "1"
3
Adjustment "3"
4
Adjustment "4"
5
Space required to remove key
6
Locating pin
7
Name plate
8
Lock nut
Ø 1.77 (45)
2
3
3.27 (83)
Ø 1.77 (45)
2
8
2
Adjustment "2"
1
1
1
30 A/F
4,569 PSI (315 bar)
5,076 PSI (350 bar)
3
Sizes 40, 50
4.49 (114)
0.71 (18)
4.19 (106.5)
3; 4
2
0.71 (18)
5.43 (138)
5
3, 4
2
A/F = Across Flats
Ø 1.97 (50)
max. 3.86 (98)
Ø 1.97 (50)
0.158 (4)
max. 1.36 (34.5)
6
30 A/F
32 A/F
8
8
L1
Z1
X
Y
0.158 (4)
7
32 A/F
X
S, Z
Y
8
H4
H1
Ø 1.38 (35)
1.26 (32) 30 A/F
H3
3.27 (83)
10 A/F
1
6
**Orifice - dia.
Size
40
50
S**
0.039 (1.0)
0.039 (1.0)
X**
0.039 (1.0)
0.039 (1.0)
Y**
0.047 (1.2)
0.047 (1.2)
Z**
0.047 (1.2)
0.047 (1.2)
H1
2.36 (60)
2.677 (68)
H3
1.26 (32)
1.339 (34)
H4
1.417 (36)
1.417(36)
4.92 (125)
5.51 (140)
L1
64/66
8
1
Ø 1.38 (35)
0.158 (4)
Z2
6 A/F
5
RA 21 050/06.98
Control cover for pressure-dependent and independent sequencing functions
Sizes 16 ... 50
1
2
3
5
4
LFA
Nominal size 16
Nominal size 25
Nominal size 32
Nominal size 40
Nominal size 50
6
7
8
6X
= 16
= 25
= 32
= 40
= 50
on
request
series
6X
12 =
SAE threaded external connections and UNC mounting bolts
No code =
BSP version
No code =
V=
Solenoid de-energized: pressure
sequence function
Solenoid: open
Solenoid de-energized: open
Solenoid energized: pressure
sequence function
= DZWA
NBR seals
FPM seals
(other seals on request)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
= DZWB
Adjustment mechanism
Rotary knob
Hexhead nut with protective cap
Lockable rotary knob with scale
(H lock to automotive industry standard)
Rotary knob with scale not lockable
Pilot oil supply
Pilot oil
drain
Pilot oil
supply
=1
=2
=3
No code
X
Y
XY
internal
internal
external
internal
internal
external
external
external
Pressure ratings (max. set sequencing pressure)
210 =
3,046 PSI (210 bar)
315 =
4,569 PSI (315 bar)
350 =
5,076 PSI (350 bar)
=4
Series 6X
=
=
=
=
= 6X
4 WE 6 D ../..
A
B
A
a
A
B
P
T
S**
X**
X
B
Z2
Z**
Y**
Y
S**
X**
X
B
Z2
P
Z**
Y**
Z1
X
Port Z2 not
available in
size 32
210
LFA..DZWA.../ 315 Y
350
A
B
Z2
Z**
Z1
Y**
B
P
T
Y
S**
X**
X
B
A
A
210
LFA..DZWA.-../ 315
350
T
S**
X**
Y
A
a
T
P
Z1
B
a
a
Z2
Z**
Y**
Z1
Y
A
210
LFA..DZWA.../ 315 X
350
210
LFA..DZWA.../ 315 XY
350
4 WE 6 D ../..
A
A
B
A
B
a
a
P
T
S**
X**
X
B
Z2
Z1
A
210
LFA..DZWB.../ 315
350
Y**
Y
S**
X**
X
B
Z2
T
P
Z**
Z1
A
210
LFA..DZWB.../ 315 Y
350
Y**
Y
S**
X**
X
Port Z2 not
available in
size 32
A
B
P
T
a
T
P
Z**
B
a
B
Z2
Z**
Z1
A
210
LFA..DZWB.../ 315 X
350
Y**
Y
S**
X**
X
B
Z2
Z**
Z1
Y**
Y
A
210
LFA..DZWB.../ 315 XY
350
65/66
RA 21 050/06.98
Control cover for pressure-dependent and independent sequencing functions:
dimensions in inches (millimeters)
3,046 PSI (210 bar)
3
Adjustment "3"
4
Adjustment "4"
5
Space required to remove key
6
Locating pin
7
Name plate
8
Lock nut
9
M..plug for DZWA..
Ø 1.77 (45)
2
3
3.27 (83)
3, 4
11 Valve mounting bolts are
included within the control
cover scope of supply
max. 1.36 (34.5)
3, 4
5
2
Ø 1.97 (50)
max. 3.86 (98)
1.22 (31)
30 A/F
Z1
P
B
A
Ø 1.97 (50)
0.158 (4)
6
X
0.71 (18)
138
2 5
A/F = Across Flats
1.28 (32.5)
4.49 (114)
0.71 (18)
4.2 (106.5)
10 M..plug for DZWB..
L1
8
Ø 1.77 (45)
Adjustment "1"
2
2
1
Adjustment "2"
1
30 A/F
1
4,569 PSI (315 bar)
5,076 PSI (350 bar)
3
Sizes 40, 50
32 A/F
8
Y
32 A/F
T
L6
1.6 (40.5)
11
8
1
Ø 1.38 (35)
0.158 (4)
Z2
0.158 (4)
8
7
9
6 A/F
3.27 (83)
10
Directional spool valve 4WE6D
B
Ø 1.38 (35)
H1
Y
H3
S, Z
H4
A
P
X
**Orifice - dia.
1.26 (32)
6
8
30 A/F
10 A/F
1
Size
40
50
S**
0.039 (1.0)
0.039 (1.0)
X**
0.039 (1.0)
0.039 (1.0)
Y**
0.047 (1.2)
0.047 (1.2)
Z**
0.047 (1.2)
0.047 (1.2)
P**
0.047 (1.2)
0.047 (1.2)
H1
2.36 (60)
2.678 (68)
H3
1.26 (32)
1.339 (34)
H4
1.417 (36)
1.417 (36)
4.721 (125)
5.512 (140)
L6
2.165 (55)
2.756 (70)
L7
1.752 (44.5)
2.047 (52)
L1
Mannesmann Rexroth Corporation
Industrial Hydraulics Division, 2315 City Line Road, Bethlehem, PA 18017-2131 Tel. (610) 694-8300 Fax: 610-694-8467
Mobile Hydraulics Division, 1700 Old Mansfield Road, Wooster, OH 44691-0394 Tel. (330) 263-3400 Fax: 330-263-3333
66/66
All rights reserved – Subject to revision
Printed in U.S.A.