Liquid Ring Vacuum
Vacuum Pump (Single-action type)
Model
Standard Specifications of Major Components
Bore
[Inlet x Outlet] (mm)
Item
Applicable
gas and seal
liquid
Model Identification
The following model information is for example
purposes only:
20×20 25×25 32×32 40×40
Seal liquid
Water
Seal liquid temperature
13 to 50℃
Gas
Air
Gas temperature
Normal temperature
Outlet pressure
101.3 kPa abs (0 kPa G)
Inlet bore (mm)
Example: 40 mm
Model name
Number of
motor poles
Example: 4 poles
Motor capacity
(kW)
Example: 3.7 kW
Seal liquid filling method Pressurized
Seal liquid pressure required 50 kPa G
Structure Outlet type
Pump
Material
Motor
Variable port (ball valve)
Shaft seal
Single mechanical seal
Bearing
Deep groove ball bearing
Casing
FC200
Port plate
CAC406
Impeller
CAC402
Shaft
SUS420J2
Type / Number of poles
Fully-enclosed, external fan (indoor), 2- or 4-pole
Phase
50 Hz: 3-phase
60 Hz: 3-phase
Piping connection
Special screwed companion flange
Standard Accessories (Direct Drive Type)
Common base ............................... 1 pc
Foundation bolt .............................. 1 set
Motor .......................................... 1 pc
Companion flange ........................... 1 set
Shaft coupling ................................ 1 set
Safety cover .................................. 1 set
Seal liquid control valve ..................... 1 pc
Optional Accessories
Vacuum gauge
Separator tank
Special Specifications
Structure
Pump
Material
Temporary strainer
Seal liquid filling method Self-priming
Gas check valve
Outlet type
Fixed port
Seal liquid flow meter
Casing
SCS13, SCS14
Gas ejector
Port plate
SCS13, SCS14
Impeller
SCS13, SCS14
Shaft
SUS304, SUS316
Fully-enclosed, external fan (outdoor)
Motor
Type
Drip-proof
Increased safety explosion-proof,
Pressure-resistant explosion-proof
Contact us for custom specifications other than those noted above.
VK Model
Liquid Ring Vacuum
Vacuum Pump (Single-action type)
60 Hz Performance Curves
50 Hz Performance Curves
3.0
3.0
40VK23.7
2.0
40VK43.7
2.0
32VK22.2
Suction
Capacity
1.0
1.0
0.8
0.8
Suction
Capacity
25VK21.5
0.6
32VK22.2
25VK21.5
0.6
(m3/min)
(m3/min)
0.4
0.4
20VK2.75
20VK2.75
0.2
0.2
0.1
0.1
6
8
10
20
30
40
50 60
6
80 100
8
10
20
Rotation
speed
(min-1)
Motor
capacity
(kW)
Number
of poles
Suction capacity [suction condition]
(m3/min)
Inlet
pressure
Model
Rotation
speed
(min-1)
-86
-80
-60
-40
-20
-80
8.3
11.3
15.3
21.3
41.3
61.3
81.3
21.3
2
ー
0.15
0.2
0.25
0.3
0.31
0.3
3
20×20
20VK2.75
3500
0.32
0.44
0.54
0.64
0.67
0.66
7
25×25
25VK21.5
3500
1.1
1.08
8
32×32
32VK22.2
3500
1.8
12
40×40
40VK43.7
1750
2900
25×25
25VK21.5
2900
1.5
2
ー
32×32
32VK22.2
2900
2.2
2
0.43
0.68
0.85
0.98
1.08
40×40
40VK23.7
2900
2
0.84
1.28
1.5
1.72
1.92
3.7
Bore
[Inlet × Outlet]
(mm)
-90
20VK2.75
* The seal liquid flow rate indicates the values at -80 kPa G (21.3 kPa abs).
Approx. seal
liquid flow
rate*
(L/min)
G
( kPa
kPa abs )
-93
20×20
0.75
50 60
80 100
60 Hz Standard Specifications (at a seal liquid temperature of 15˚C)
50 Hz Standard Specifications (at a seal liquid temperature of 15˚C)
Model
40
Inlet Pressure (kPa abs)
Inlet Pressure (kPa abs)
Bore
[Inlet × Outlet]
(mm)
30
1.9
Motor
capacity
(kW)
Number
of poles
Suction capacity [suction condition]
(m3/min)
Inlet
pressure
Approx. seal
liquid flow
rate*
(L/min)
G
( kPa
kPa abs )
-93
-90
-86
-80
-60
-40
-20
-80
8.3
11.3
15.3
21.3
41.3
61.3
81.3
21.3
2
ー
0.15
0.2
0.24
0.3
0.31
0.3
4
1.5
2
ー
0.30
0.4
0.5
0.61
0.62
0.61
7
2.2
2
0.43
0.64
0.78
0.89 1
1.02
1
8
4
0.68
1.10
1.4
1.62
1.98
2
12
0.75
3.7
* The seal liquid flow rate indicates the values at -80 kPa G (21.3 kPa abs).
1.9