The Covers CVC*2RS 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 provide duel pressure Pilot operated
Relief function, using combination of a Slip-in Cartridge having a
poppet ratio of 1:1, and two Relief valves, selectable by means of
energizing a solenoid valve mounted on it.
Please note that difference in the pressure setting between the 1st
Relief valve and the 2nd Relief valve (as marked in the circuits below)
must be minimum 10 bar; 2nd Relief valve being set at lesser pressure
of the two.
By using a Double solenoid valve as shown in the circuit, an additional
unloading function can also be achieved by the cover.
A Polyhydron Group Company
Description
Section
Hydraulic symbol
DUEL PRESSURE RELIEF COVER,
ELECTRICALLY SELECTABLE
Model : CVC*2RS***
Ref. No. D 07032
Release 03 / 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 or better.
Technical specifications
AB P T
X
A
B
Y
CVC*2RSA***
P
T
BA
a
b
p
t
b
a
A B
B
A
2nd Relief
C
Y
1st Relief
X
CVC*2RSB***
B
A
X
Y
C
1st Relief
2nd Relief
A
t
p
B
b
a
For unloading normal position
P
P
T
T
XX
XX
X X
X X
A Polyhydron Group Company
D 07032- CVC*2RS***
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 Soln. D.C.V
as per ISO 4401-03-02.
Cartridge Valve Cover
CVC
16 2R 16
Ordering code
Size 16, 25, 32 and 40.
S 200
X
C
Y
L7 L7
L6 L6
L6
L6 L6
L8
ØD4
@ X & Y.
ØD5 tap
T deep.
Cover mounting interface as per ISO 7368.
ØD2
1
1
Size
L1 L2 L3 L4 ØD1
0.8
0.8
1.2
1.2
L5
23
29
35
42.5
H1
H2
H3 H5
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
L6
25
33
41
50 6
6
3.7
5.2
6.2
9.2
L7
10.5
16
17
23
16
25
32
40
L8 T
14
20
26
33
4
6
10
8
ØD5
M8
M12
M20
M16
ØD4
max
ØD3 Drill
8 deep min.
2 Relief valves
Set screw for pressure
adjustment of relief valve.
H4
A 315
1st Relief valve pressure range in bar
100, 200 and 315.
2nd Relief valve on A
2nd Relief valve on B
A
B
33.5
43.5
51
62.5
32.5
42.5
51
62.5
65
85
102
125
114.5
108.5
93
93.5
67.5
86
102
125
46
50
50
60
25
28
30
30
35
28
30
49
191
195
195
205
T
P
X
C
Y
B P
T A
X
C
Y
A
B
T
P
H5
H3
H1
5
40
20
H2
H4 ~
*M, Cover fixing S.H.C Screw
40.515
4 L1
L2
32.5
L5
31
L4
L3
ØD2
ØD1
6 A/F
6 A/F
ØD2
ØD1
Note : Solenoid (refer spool type) to be ordered seperately.
a
A B
P
T
Spool type 'D'.
a
A B
P
T
Spool type 'H'.
b
1st Relief
2nd Relief
2nd Relief valve pressure range in bar
100, 200 and 315.
Design code subjected to change.
Installation dimensions remain
same for design code 10 thru 19.
