Parker Hannifin Corporation
Hydraulics Group
Catalogue HY11-3500/UK
9
9-67
Pilot Operated Check Valve
Series C5P
C5P UK.INDD CM 02.08.11
Characteristics / Ordering Code
Y1 (must be connected)
X1
X
Z
B
A
A
Pilot operated check valves series C5P have a similar
design to the subplate mounted C4V series. The SAE
flanges allow to mount directly on the flanges of actuators
to achieve a very compact design.
Features
• Pilot operated check valve
• 2-port body with SAE61 flange
• 3 sizes (SAE ¾", 1", 1¼")
• 4 opening ratios
• Valves with position control are available on request
Ordering code
Code Size
Flow
A ® B
Flow
B ® A
2
06 1.0 bar 1.5 bar
08/10 1.0 bar 1.7 bar
4
06 4.0 bar 5.5 bar
08/10 3.5 bar 6.0 bar
6
06 2.0 bar 3.0 bar
08/10 2.2 bar 3.8 bar
Code Nominal size
06 ¾"
08 1"
10 1¼"
AC5P 8
SAE61
interface
Cracking
pressure
Pilot operated
check valve
Design
series
SealsNominal
size
Opening
ratio
Pilot
ports
X1 and
Y1=G¼"
SAE61
Code Max. pressure Size
4 280 bar 10 (SAE61)
5 350 bar 06/08 (SAE61)
Code Opening ratio
1 1 : 1
3 3 : 1
8 8 : 1
9 10 : 1
Options
Code Seals
1 NBR
5 FPM
Parker Hannifin Corporation
Hydraulics Group
Catalogue HY11-3500/UK
9
9-68
C5P UK.INDD CM 02.08.11
Pilot Operated Check Valve
Series C5P
Technical Data
General
Size 06 (¾") 08 (1") 10 (1¼")
Mounting 2-port inline flange (SAE61)
Mounting position unrestricted
Ambient temperature [°C] -20...+50
MTTF
D
value [years] 150
Weight [kg] 3.9 4.4 5.7
Hydraulic
Max. operating pressure Ports A, B [bar] 350 350 280
Port Y1 [bar] 30 30 30
Nominal flow [l/min] 180 360 600
Fluid Hydraulic oil according to DIN 51524...51525
Fluid temperature [°C] -20...+80
Viscosity permitted [cSt] / [mm
2
/s] 10...650
recommended [cSt] / [mm
2
/s] 30
Filtration ISO 4406 (1999); 18/16/13 (meet NAS 1638: 7)
Parker Hannifin Corporation
Hydraulics Group
Catalogue HY11-3500/UK
9
9-69
Pilot Operated Check Valve
Series C5P
C5P UK.INDD CM 02.08.11
Characteristic Curves
p/Q-performance curves
C5P06
C5P08
C5P10
All characteristic curves measured with HLP46 at 50°C.
Parker Hannifin Corporation
Hydraulics Group
Catalogue HY11-3500/UK
9
9-70
C5P UK.INDD CM 02.08.11
Pilot Operated Check Valve
Series C5P
Dimensions
Dimensions
Type L1 L2 L3 L4 L5 B1 H1 H2 H3 H4 D1 D2
C5P06 22.2 95.8 119.8 137 67.3 60 37 47.6 90 128 19 10.5
C5P08 26.2 112.9 139.4 137 67.3 60 45 52.4 96 134 25 10.5
C5P10 30.2 112.9 146.9 137 67.3 75 48 58.7 109 147 32 12.5
Ports
Port Function
Port size
C5P06 C5P08 C5P10
A Inlet or outlet ¾" SAE61 1" SAE61 1¼" SAE61
B Outlet or inlet ¾" SAE61 1" SAE61 1¼" SAE61
X1 External pilot port G¼"
Y1 External pilot drain G¼"
Seal kits
NG NBR FPM
06 S26-59404-0 S26-59404-5
08 S26-59405-0 S26-59405-5
10 S26-59406-0 S26-59406-5
