The Covers with model CVC PC are designed to hold polyhydron make Cartridge
valves model CV in cavities machined as per ISO 7368 , and provide facility to use
the cartridge valve as a leakage free pilot operated check valve, when its pilot port Z1 is
connected to port B of the cartridge. In this condition, the combination allow free flow
from its port A to port B and free reverse flow from port B to port A when its pilot port X
is pressurised.
In addition, flow passing through the cartridge , as an optional feature, can be controlled
by controlling the opening of the poppet by means of a Stroke limiter screw provided on
the cover. The throttling is effective in either directions.
These Stroke limiters are more effective with cartridges having poppet with cushion
nose.
A Polyhydron Group Company
Description
Section
Hydraulic symbol
CARTRIDGE VALVE COVER WITH
PILOT OPTD. CHECK VALVE AND WITH
OPTION OF STROKE LIMITER
Model : CVC PC
Mounting interface : As per ISO 7368
Working pressure : 350 bar.
Hydraulic medium : Mineral oil.
Temperature range : -20 to + 80°C.
Viscosity range : 10 cSt to 380 cSt.
Fluid cleanliness required : ISO 4406 20/18/15 or better.
Check valve Area ratios : Pilot piston : poppet seat = 2.6 : 1.
Technical specifications
Ref. No. D 09809
Release 05 / 2015
ENGINEERING - 1 of 2
78-80, Machhe Industrial Estate,
Machhe, Belgaum - 590 014. INDIA.
Phone : +91-(0)831- 2411001
Fax : +91-(0)831- 2411002
E-mail : polyhydron@gmail.com
Website : www.polyhydron.com
XX
B
A
*
***
*
A
B
CZ1
X
*
*
A
B
CZ1
X
XX
B
A
Model : CVC PC Model : CVC PCT
Model : CVC PC
Model : CVC PCT
*
*
*
*
Y Y
X Z1 Y
X Z1 Y
Cartridge Valve Cover
CVC
16 PC
10
Unit dimensions
Ordering code
Dimensions in mm.
Size 16, 25, 32 and 40.
With stroke limiter
installation dimensions remain
Design code subjected to Change .
same for design code 10 thru 19.
Pilot operated check valve
T
Size
L1 L2 L3 L4 ØD1L5 L6 H1 H2 H3 H4
Mass
Kg.
apprx
A/F1
M8 x 40 Long
M12 x 45 Long
M16 x 55 Long
M20 x 70 Long
39 Nm
135 Nm
330 Nm
650 Nm
Note:
1. Mounting interface for cover as per ISO 7368.
2. Cover fixing S.H.C Screws are OUT OF
SCOPE OF SUPPLY.
X
Y
Z1
5
H3
H5
X
Y
H1
H2
L2
L1
L4
L3
6 A/F
A/F1
X
C
Y
L6 L6
L5 L5
L5 L5
ØD3
@ X, Y & Z1.
ØD4 tap
T deep.
Cover mounting interface as per ISO 7368.
ØD2 Drill
8 deep.
Z1
4.5
4.5
L6
ØD1
L7 H5
80
87
102
125
32.5
42.5
51
62.5
65
85
102
125
32.5
42.5
51
62.5
23
29
35
42.5
25
33
41
50
10.5
16
17
23
35
40
53
60
87
92
116
126
12
18
24
30
20
20
20
27
56.5
56.5
56.5
63.5
5
6
6
6
0.8
0.8
1.2
1.2
4
6
6
6
4
6
8
10
M8
M12
M16
M20
L7
ØD2 ØD3 ØD4H6
14.5
20
20
25
16
25
32
40
*M. 4 nos. Cover fixing
S.H.C. Screw
(Class 12.9)
Tightening
Torque.
H6
A Polyhydron Group Company
D 09809- CVC PC
ENGINEERING - 2 of 2
All rights reserved.
Subject to revision
1.8
2.8
4.5
7.5
* M, Cover fixing S.H.C Screw.
* *
14
20
26
33
T
Omit if not required
X
Y
A/F2
A/F2
10
10
17
17
H4
Model : CVC PCT
*
*
Model : CVC PC
