Parker Hannifin Corporation
Hydraulics Group
Catalogue HY11-3500/UK
6
6-15
C4V UK.INDD CM 13.07.11
Check Valve
Series C4V
Characteristics / Ordering Code
Direct operated check valves C4V allow free flow from A
to B. The counter direction is blocked. The C4V series are
equipped with a leak-free seat type cartridge.
Function
The pressure arising in port A lifts the poppet from the
valve seat and releases the flow to B. In the counter direc-
tion, the spring and the pressure on top of the cartridge
hold the poppet onto the seat and block the flow.
C4V06
C4V10
SealCheck
valve
direct
operated
Code Seal
1 NBR
5 FPM
C4V
0
Code
Approx. cracking pressure [bar]
C4V03 C4V06/10
1 2.8 3.5
2 0.5 0.5
3 0.3 0.3
4 2.2 2.2
5 — 9.0
6 1.2 1.2
7 3.0 —
Options
Approx.
cracking
pressure
Code Nominal size
03 NG10
06 NG25
10 NG32
B
Design
series
Nominal
size
5
Max.
pressure
350 bar
3
Subplate
mounting
Ordering code
Parker Hannifin Corporation
Hydraulics Group
Catalogue HY11-3500/UK
6
6-16
C4V UK.INDD CM 13.07.11
Check Valve
Series C4V
Technical Data / Performance Curves
General
Nominal size NG10 NG25 NG32
Subplate mounting ISO 5781
Mounting position unrestricted
Ambient temperature [°C] -20...+80
MTTF
D
value [years] 150
Weight [kg] 2.8 4.6 6.1
Hydraulic
Max. operating pressure [bar] 350
Nominal flow [l/min] 150 270 450
Fluid Hydraulic oil according to DIN 51524
Viscosity permitted [cSt] / [mm²/s] 20...380
recommended [cSt] / [mm²/s] 30...50
Fluid temperature permitted [mm²/s] -20...+70
recommended [mm²/s] 30...50
Filtration ISO 4406 (1999); 18/16/13 (meet NAS 1638:7)
Technical data
∆p/Q performance curve
Characteristic curve measured with HLP46 at 50°C.
Parker Hannifin Corporation
Hydraulics Group
Catalogue HY11-3500/UK
6
6-17
C4V UK.INDD CM 13.07.11
Check Valve
Series C4V
Dimensions
Tolerance for all dimensions ±0.2
NG ISO-code x1 x2 x3 x4 x5 y1 y2 B1 B2 H1 H2 H3 L1 L2
10 5781-06-07-0-00 42.9 35.8 – 7.2 31.8 66.7 33.4 87.3 33.4 83 21 45 29 94.8
25 5781-08-10-0-00 60.3 49.2 – 11.1 44.5 79.4 39.7 105 39.7 109.5 29 71.5 34.7 126.8
32 5781-10-13-0-00 84.2 67.5 42.1 16.7 62.7 96.8 48.4 120 48.4 120 29 82 30.6 144.3
NG ISO-code d1max d2 t1 d3 t2 d4 d5
10 5781-06-07-0-00 15 7.1 8 M10 16 10.8 17
25 5781-08-10-0-00 23.4 7.1 8 M10 18 10.8 17
32 5781-10-13-0-00 32 7.1 8 M10 20 10.8 17
NG ISO-code Bolt kit Surface finish
NBR FPM
10 5781-06-07-0-00 BK 505 4x M10 x 35 DIN 912 12.9 63 Nm ±15% S16-39362-0 S16-39362-5
25 5781-08-10-0-00 BK 485 4x M10 x 45 DIN 912 12.9 63 Nm ±15% S16-39364-0 S16-39364-5
32 5781-10-13-0-00 BK 506 6x M10 x 45 DIN 912 12.9 63 Nm ±15% S16-39366-0 S16-39366-5
Parker Hannifin Corporation
Hydraulics Group
Catalogue HY11-3500/UK
6
6-18
C4V UK.INDD CM 13.07.11
Notes
