7-47
CPOM.PMD CM
Pilot-Operated Check Valve
Series CPOM
Catalogue HY11-2500/UK
7
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Characteristics
Characteristics
DIN
NG6 NG10 NG16 NG25
Port
size
Mounting pattern ISO 4401
Series
Working pressure
Opening pressure
Control ratio
Weight [kg]
CPOM2
350 bar
1.0 bar
1 : 3 or
1 : 7
1.8
CPOM3
350 bar
0.8 bar
1 : 3 or
1 : 6.5
4.0
CPOM4
350 bar
0.5 bar
1 : 2.4
7.4
CPOM6
210 bar
0.4 bar
1 : 3
9.5
CPOM4 / CPOM6
DD
AA
BB
P
Y
X
T
B
A
X
PYT
B
A
X
PYT
B
A
Pilot-operated check valves from the Parker Manapak
series CPOM are sandwich plate valves designed for
stacking beneath a directional valve with a standardised
mounting pattern. Depending on the function required,
one or two pilot-operated check valves are arranged in
the ports A and/or B. The free flow direction is always
from the valve side to the manifold side.
CPOM2 / CPOM3
CPOM3
Features
• The valve bodies of the Parker Manapak valve series
CPOM are made of steel.
• The valve poppet is precisely guided into the steel
sleeve and ensures a good seal on the seat. This
metallic sealing configuration is subject to the criteria
as a result of metallic line contact and operational
wear.
• When the valve poppet is open, the large cross-sec-
tion allows high flow rates at low differential pressure.
• Different control ratios can be chosen with the NG6
and NG10 valves.
PTBA
PTBA
Function
The check valves open when flowing to the consumer
side, where the opposing check valve is hydraulically-
mechanically pilot-operated simultaneously by a control
spool, and thus the return flow is enabled from other con-
sumer sides.
7-48
CPOM.PMD CM
Pilot-Operated Check Valve
Series CPOM
Catalogue HY11-2500/UK
7
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Ordering Code
CPOM
Hydraulically operated
check valve
pilot ratio 3 : 1
Size
Code Size
Seal
FPM
Code
Connection
2
3
6
NG6
NG10
NG25
AA
BB
DD
only A
only B
A and B
Switch code
"A"
"B"
"C"
V
Design
series
Poppet
style
Code
Pressure
omit
25
50
70
1.0 bar
2.5 bar
5.0 bar
7.0 bar
Cracking
pressure
Size
2, 3, 6
2 and 3
2
CPOM
Hydraulically
operated
check valve
Size
Code Size
Seal
FPM
Code
Connection
2
3
4
NG6
NG10
NG16
AA
BB
DD
only A
only B
A and B
V
Design
series
Poppet
style
Code
Size
HT
2
3
4
Pilot
ratio
ratio
7 : 1
6.5 : 1
13 : 1
HT
Without pre-opening
With pre-opening
7-49
CPOM.PMD CM
Pilot-Operated Check Valve
Series CPOM
Catalogue HY11-2500/UK
7
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Performance Curves
CPOM2
CPOM3
CPOM3 (type HT)
CPOM2 (type HT)
∆∆
∆∆
∆p/Q performance curves
Pressure differential ∆p [bar]
Flow [l/min]
Free flow
against the spring
Pilot-operated
flow
Pressure differential ∆p [bar]
Flow [l/min]
Free flow
against the spring
Pilot-operated
flow
Pressure differential ∆p [bar]
Flow [l/min]
Free flow
against the spring
Controlled
Pressure differential ∆p [bar]
Flow [l/min]
Free flow
against the spring
Controlled
8
6
4
2
0
0 12.5 25 37.5 50
10
7.5
5
2.5
0
0 18.5 37 55.5 74
7-50
CPOM.PMD CM
Pilot-Operated Check Valve
Series CPOM
Catalogue HY11-2500/UK
7
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Performance Curves
CPOM4 (type HT)
CPOM6
∆∆
∆∆
∆p/Q performance curves
Pressure differential ∆p [bar]
Flow [l/min]
Free flow
against the spring
Controlled
Pressure differential ∆p [bar]
Flow [l/min]
Free flow
against the spring
Controlled
7-51
CPOM.PMD CM
Pilot-Operated Check Valve
Series CPOM
Catalogue HY11-2500/UK
7
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
CPOM2
CPOM3
Note:
The O-rings for sealing the connecting surface of the
manifold side are included. The O-rings and positioning
pins are always mounted on the manifold side.
Control ratio
Seal
V
Order code
SK-CPOM2-V-11
Seal kit
CPOM2
Seal
V
Order code
SK-CPOM3-V-11
Seal kit CPOM3
Dimensions
Note:
The O-rings for sealing the connecting surface of the
manifold side are included. The O-rings and positioning
pins are always mounted on the manifold side.
HT
130
Valve side
Manifold side
3.5
40
22
111.5
34
45
7
165
Valve side
Manifold side
50
30
145
45.5
70
12
7-52
CPOM.PMD CM
Pilot-Operated Check Valve
Series CPOM
Catalogue HY11-2500/UK
7
Parker Hannifin GmbH & Co. KG
Hydraulic Controls Division
Kaarst, Germany
Dimensions
CPOM4
Order code
SK-CPOM4HTV
Seal kit CPOM4
Seal
V
CPOM6
Order code
SK-CPOM6-V-20
Seal kit CPOM6
Seal
V
Note:
The O-rings for sealing the connecting surface of the
manifold side are included. The O-rings and positioning
pins are always mounted on the manifold side.
Note:
The O-rings for sealing the connecting surface of the
manifold side are included. The O-rings and positioning
pins are always mounted on the manifold side.
167
Valve side
Manifold side
6.4
80
24
143.5
22
90
10
200
Valve side
Manifold side
70
57
168
6.2
115
10
11.5
51.5
