The Covers CVC*PR are designed to hold Polyhydron make 2 port slip-in cartridge
valves model CV*** in the cavities machined as per ISO 7368, and are meant
to create a Proportional pilot operated relief function and a relieving function by
incorporating a combination of Electrically operated proportional Relief valve and a
mechanically adjustable Pressure Relief valve in the cover, in conjuction with a Slip-in
Cartridge having a poppet ratio of 1:1 in the Slip-in cavity.
The Relief valve in the cover is intended for additional safety by limiting the maximum
pressure in the line and can be set independently by using the pressure setting screw
on the cartridge.
The electrically pressure proportional valve is not in the scope of supply.
A Polyhydron Group Company
Description
Section
Hydraulic symbol
COVER FOR PROPORTIONAL
RELIEF VALVE
Model : CVC*PRS**
Ref. No. D 09636
Release 02 / 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
Mounting interface : As per ISO 7368
Working pressure : 350 bar.
Hydraulic medium : Mineral oil.
Temperature range : -20°C to + 80°C.
Viscosity range : 10 cSt to 380 cSt.
Fluid cleanliness required : ISO 4406 20/18/15 (17/14/11 for long service life) or better.
Technical specifications
TP
X
A
B
C
Y
X
Y
A
B
X
C
P
T
A Polyhydron Group Company
D 09636- CVC*PRS**
ENGINEERING - 2 of 2
Unit dimensions
Dimensions in mm.
All rights reserved.
Subject to revision
Notes:
1. Cover fixing S.H.C Screws are OUT OF
SCOPE OF SUPPLY.
2. Mounting interface for Electrical Proportional Relief valve
as per ISO 4401-03-02.
Cartridge Valve Cover
CVC
16 PR
16
Ordering code
Size 16, 25, 32 and 40.
Installation dimensions remain
Design code subjected to Change .
same for design code 10 thru 19.
S
Pressure rating in bar
100,200,315 and 400.
100
X
C
Y
L8 L8
L7 L7
L7
L7 L7
L9
ØD4
@ X & Y.
ØD5 tap
T deep.
Cover mounting interface as per ISO 7368.
ØD2
1
1
Size
L1 L2 L3 L4 ØD1
67.5
86
102
125
65
85
102
125
33.5
43.5
51
62.5
32.5
42.5
51
62.5
0.8
0.8
1.2
1.2
L5
23
29
35
42.5
L6
86
82.5
67.5
67.5
H1
H2
H3 H5
46
50
50
60
35
28
30
49
25
28
30
30
Mass
Kg.
apprx
1.2
1.2
*M. 4 nos. Cover fixing
S.H.C. Screw
(Class 12.9)
M8 x 40 Long
M12 x 45 Long
M16 x 55 Long
M20 x 70 Long
Tightening
Torque.
39 Nm
135 Nm
330 Nm
650 Nm
ØD3
4
12
18
24
30
6
L7
25
33
41
50 6
6
2.5
4.0
5.0
8.0
L8
10.5
16
17
23
16
25
32
40
L9
24.5
37
37.5
61
T
14
20
26
33
4
6
10
8
ØD5
M8
M12
M20
M16
ØD4
max
Y
C
X
X
C
Y
L4
L3
32.5
31
40.5
L1 L2
H1
H5
H3
H2
H4 ~
5
6 A/F
L5
ØD2
T
P
L6
4
*M, Cover fixing S.H.C Screw
ØD1
T
ØD3 Drill
8 deep min.
Proportional pressure
relief valve
Set screw for pressure
adjustment of relief valve.
P
H4
151
155
155
165