B38P
High flow filter/regulator (stainless steel)
1/4 NPT, 3/8 NPT, G1/4 or G3/8
High flow filter/regulator designed for
use in corrosive environment
Metallic parts meet NACE* Standard MR-01-75
Applications include marine environment,
oil and gas productions
* National Association of Corrosion Engineers – recognised oil-field recommendation for
resistance to sulphide stress cracking common in well-head and other corrosive environments
Technical features
Port sizes:
1/4 NPT, 3/8 NPT, G1/4 or G3/8
1/4 PTF (gauge) and
1/4 NPT (automatic drain)
Drain:
Manual or automatic
Automatic drain operation
conditions (float operated):
To close: > 0,3 bar (4,35 psi)
To open: < 0,2 bar (2,9 psi)
Minimum air flow required to
close 1 dm3/s
Medium:
Compressed air only
Maximum inlet pressure:
31 bar (449 psi) (manual drain)
17 bar (246 psi)(autodrain)
Outlet pressure range:
0,5 ... 10 bar (7,25 ... 145 Psi)
Flow:
40 dm3/s
Element:
5, 25 or40 μm
Fluid/Ambient temperature:
-20 ... +80°C (-4 ... +176°F)
(FKM seals)
-40 ... +80°C (-40 ... +176°F)
(NBR seals)
Air supply must be dry enough
to avoid ice formation at
temperatures below +2°C(+35°F).
Materials:
Body, bowl, bonnet, filter element
and adjusting screw:
316 stainless steel
Elastomers: FKM or NBR
Technical data, standard model, relieving and panel nut
Symbol
Port size Outlet pressure *1)
(bar)
Element
(μm)
Flow *2)
(dm3/s)
Drain
Weight
(kg)
Model
1/4 NPT
0,5 ... 10
5
40
Manual
1,61
B38P-254-B1MA
3/8 NPT
0,5 ... 10
5
40
Manual
1,60
B38P-354-B1MA
1/4 NPT
0,5 ... 10
5
40
Automatic
1,74
B38P-254-A1MA
3/8 NPT
0,5 ... 10
5
40
Automatic
1,73
B38P-354-A1MA
*1) Outlet pressure can be adjusted to pressures in excess of, and less than,
those specified. Do not use these units to control pressures outside of the
specified ranges.
*2) Typical flow with 10 bar inlet pressure, 6,3 bar set pressure and a 1 bar drop
from set.
Option selector
Port size *
B38P-˙˙4-˙˙M˙
Substitute
Thread form
1/4”
2
NPT
3/8”
3
ISO G parallel
Temperature range
-20 ... +80°C (FKM seals)
-40 ... +80°C (NBR seals)
* 1/2” port size on request
11/13
2011-A8168c
Substitute
Substitute
A
Element
G
Substitute
5
5 µm
1
4
25 µm
2
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. © 2013 Norgren China
40 µm
3
Drain
Substitute
Automatic
A
Manual short bowl
B
N/en/en 8.530.350.01
B38P
Flow characteristics
Inlet pressure: 10 bar, filter element: 5 µm, port size: 1/4 NPT
bar
Outlet pressure
8
8,0 bar
6
6,3 bar
4
4,0 bar
2
0
2,5 bar
0
10
20
30
dm3/s
40
Flow
Regulating characteristics
P2
(bar)
Regulation 10 % flow
8 bar (0,7 dm3/s)
6
6,3 bar (0,56 dm3/s)
4
4 bar (0,37 dm3/s)
2
1
2
3
4
8 bar (7 dm3/s)
6
6,3 bar (5,6 dm3/s)
4
4 bar (3,7 dm3/s)
2
2,5 bar (0,25 dm3/s)
0
Regulation 100 % flow
8
Outlet pressure
Outlet pressure
8
0
P2
(bar)
5
6
7
8
9
10
P1(bar)
0
2,5 bar (2,5 dm3/s)
0
1
2
Inlet pressure
3
4
6
7
8
9
10 P1(bar)
11/13
Inlet pressure
Accessories
Panel nut
Neck mounting bracket
Gauge *1)
Plastic adjusting knob
5988-02
18-001-973 (includes panel nut)
18-013-913 (0 ... 6 bar, -40 ... 65°C)
74630-04
18-013-909 (0 ... 10 bar, -40 ... 65°C)
*1) Stainless steel items not strictly to NACE standard MR-01-75.
Spare parts
Filter element
Reparatursatz
Filter element
A080823-01 *2)
5 µm:
5984-01
A080823-03 *3)
25 µm:
A080874-02
A080823-02 *4)
40 µm:
A080874-03
A080823-04 *5)
*2) manual drain, FPM
*3) manual drain, NBR
*4) auto drain, FPM
*5) auto drain, NBR
N/en/en 8.530.350.02
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. © 2013 Norgren China
2011-A8168c
B38P
Dimensions
Dimensions shown in mm
Manual drain
Projection/First angle
0 ... 6
0 ... 6
Auto drain
ø38
55
200
48
1
172 #
135
113 #
48
1
55
117
ø38
2
117
2
13
8,5
63
25
63
1/4 NPT
# Minimum clearance required to remove bowl
1 1/4 PTF Gauge port
2 1/8 PTF Exhaust port
13
63
63
Neck mounting bracket
75
25
8,5
1,5
35
54
65
38
6,5
41
Warning
These products are intended for use in industrial compressed air
systems only. Do not use these products where pressures and
temperatures can exceed those listed under »Technical features«.
Before using these products with fluids other than those specified,
for non-industrial applications, life-support systems, or other applications not within published specifications, consult NORGREN.
Through misuse, age, or malfunction, components used in
fluid power systems can fail in various modes.
11/13
2011-A8168c
The system designer is warned to consider the failure modes
of all component parts used in pneumatic systems and to provide
adequate safeguards to prevent personal injury or damage to
equipment in the event of such failure.
System designers must provide a warning to end users in
the system instructional manual if protection against
a failure mode cannot be adequately provided.
System designers and end users are cautioned to review specific
warnings found in instruction sheets packed and shipped with
these products.
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifications given in this document. © 2013 Norgren China
N/en/en 8.530.350.03