The cartridge valves with model CV are used to control oil pressure
flow rate or direction and are designed for insertion into cavities machined
as per ISO 7368. These cartridges are available in two area ratios , four
cracking pressures and seven poppet styles. The covers are available for
different functions like directional control, pressure control, unloading,
flow control etc.
A Polyhydron Group Company
Description
Section
2 PORT SLIP - IN
CARTRIDGE VALVES (ISO 7368)
Model : CV
Ref. No. D 03426
Release 11 / 2018
ENGINEERING - 1 of 13
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
C
C
B
A
B
A
B
C
A
B
C
A
B
C
A
C
B
A
C
B
A
B
A
C C
B
A
Relief cartridge
with orifice and
cushion nose
Area ratio
(1:1)
Standard
cartridge
Area ratio
(1:1)
Cartridge with
Cushion nose
Area ratio
(1:1)
Relief cartridge
with orifice
Area ratio
(1:1)
C
B
A A
B
C
A
C
Standard
cartridge
Area ratio
(1:1.5)
Cartridge with
Cushion nose
Area ratio
(1:1.5)
Check cartridge
with Cushion nose
Area ratio
(1:1.5)
A
B
C
Check cartridge
Area ratio
(1:1.5)
B
B
C
A
B
C
A
B
C
A
CV*P*O -* CV*R*O -* CV*C*O -* CV*C*C -*CV*P*C -* CV*K*O -*CV*R*C -* CV*K*C -*
Models
Hydraulic symbols
CV*P*O -* CV*R*O -* CV*C*O -* CV*C*C -*CV*P*C -*
CV*K*O -*
CV*R*C -* CV*K*C -*
AA = Area of poppet exposed to port 'A'.
CA = Area of poppet exposed to control pressure.
AA : CA = Area Ratio.
***
***
A Polyhydron Group Company
D 03426 - CV
ENGINEERING - 2 of 13
Unit dimensions
Dimensions in mm.
All rights reserved.
Subject to revision
X
C
Y
L2 L2
L1 L1
L1
L1 L1
L3
ØD6
@ X & Y.
ØD7 tap
T deep.
Cover mounting interface as per ISO 7368.
ØD5 Drill
8 deep min.
(only for pr. relief valve
& unloader valve)
u
ØD1
15°
3.2
1.6
0.8
u
H5
H1
H6
H3
ØD4
H7
H4
H2
H6
ØD3
ØD2
1.6
3.2
15°
Cavity machining details
Size
L1 L2 L3
23
29
35
42.5
H1 H2
H4
H5
Tightening
Torque
Nm
39
135
330
650
ØD5
4
20
30
30
30
6
25
33
41
50 6
6
10.5
16
17
23
16
25
32
40
T
14
20
26
33
4
6
10
8
ØD7
M8
M12
M20
M16
ØD6
max
H3
43
58
70
87
56
72
85
105
29.5
40.5
48
59
11
12
13
15
L3
Z1
Z2
Table no. 1
ØD2
25
34
ØD1
32
45
60
75
55
45
ØD3
16
25
40
32
max
ØD4
min
16
25
40
32
25
40
32
50
maxmin
34
44
52
64
H6
2
2.5
2.5
3
0.5
1
1.5
2.5
H7
min
u
0.03
0.03
0.03
0.05
ØD5 Drill
8 deep min.
(Other than relief &
unloading valve)
***
±0.2 H8 H8
H13
±0.2 ±0.2
A
B
* *
*
Depth of finish.
max
R0.3
R0.3
R0.3
0.01 100
+0.1+0.1
10 Series 50 Series
Cartridge models
ØD1
L1
R0.3
1.8x20°
1.6
L2
1.6
Cavity in cover for 50 series cartridge ring extruded boss
#
Depth of finish.
Size
11
28
9.5
16
11
20.8
11
25
Table no. 2
9.58.5 9.5 9.5
16 25 32 40
L1 ±0.2
L2 ±0.2
ØD1
#
H8
Cartridge
cover
R0.3
A Polyhydron Group Company
D 03426 - CV
ENGINEERING - 3 of 13
All rights reserved.
Subject to revision
Technical specifications
Construction ............................................................ Seat type.
Mounting type ........................................................... Insert in cavity conforming to ISO 7368 , DIN 24342 .
Mounting position ..................................................... Optional.
Flow direction ........................................................... Model with ( 1:1 ) -- CV*P*O -*
CV*P*C -* A B
CV*R*O -*
CV*R*C -*
Model with ( 1:1.5 ) -- CV*K*O -*
CV*K*C -* A B
CV*C*O -*
CV*C*C -*
Area ratio ( AA : CA ).................................................. ( 1:1 ) for Model :
CV*P*O -*, CV*P*C -*, CV*R*O -*, CV*R*C -*
( 1:1.5 ) for Model :
CV*K*O -*, CV*K*C -*, CV*C*O -*, CV*C*C -*
Operating pressure at port A, B, X, Z1, Z2 ................ 350 bar.
(For Y port refer individual cartridge cover catlogue)
Cracking pressure ...................................................
Hydraulic medium ................................................... Mineral oil.
Viscosity range ....................................................... 10 to 380 cSt.
Fluid temperature range .......................................... -10 °C to +70 °C.
Fluid cleanliness requirement ................................. ISO 4406 20/18/15 or better.
Flow handling capacity ( l/min) ................................ Refer graphs.
Pilot volume ( cm³ ) ................................................ Valve size : 16 25 32 40
Volume : 1.6 3.8 8.0 16.6
***
Area ratio
1 : 1 1 : 1.5
Flow direction
Spring type
A to B
A to B B to A
Cracking pressure (bar)
X
A
B
C
D
0.0 0.0 0.0
0.3 0.45 0.0
0.6 0.9 1.8
1.2 1.8 3.6
2.3 3.5 7.1
A Polyhydron Group Company
All rights reserved.
Subject to revision
50
2
0 100 150 200 250
1
3
4
5
6
7
8
0
Pr. drop in bar
Flow in l/min
2000 100 300 400 500
Flow in l/min
1
0
2
3
4
5
6
7
8
Pr. drop in bar
0
Flow in l/min
0 150 450
2
4
6
8
10
12
14
50 550 650 750350250
0
4
6
2
12
14
8
10
1000
Pr. drop in bar
Flow in l/min
300 500 700 900 1100 1300
Performance curve
Oil Used : VG 68, Viscosity : 68 cSt @ 40 °C, Temperature @ test : 50 °C.
CV16
Ordering code
Pr. drop in bar
D 03426 - CV
ENGINEERING - 4 of 13
***
***
CV25
***
CV40
***
CV32
***
M - With cushioning shoulder
N - Without cushioning shoulder
Note : The indicated charasteristics curves have been determined without inserting springs and show
average values with regard to flow from A to B or B to A for 1:1 and 1:1.5 area ratio cartridges.
Cartridge Valve
Size 16, 25, 32 and 40.
Area ratio and special function
Poppet construction
O - Without cushion nose
Design code subjected to change.
Installation dimensions remain
same for design code 10 thru 19.
Standard function - P
Only Relief valve function - R
Standard function - K
Check valve function - C
1 : 1
1 : 1.5
C - With cushion nose
Spring
type
Cracking pressure ( bar )
Area ratio
1 : 1 1 : 1.5
X
A
B
C
D
A to B A to B B to A
0.0 0.0 0.0
0.3 0.45 0.9
0.6 0.9 1.8
1.2 1.8 3.6
2.3 3.5 7.1
*
*
Including relief valve function
CV 16
P B
C 1110
Cartridge type
10 - Ring with flat face
50 - Ring with extruded boss
A Polyhydron Group Company
D 03426 - CV
ENGINEERING - 5 of 13
All rights reserved.
Subject to revision
***
X
C
B
A
C
Y
B
A
X
X
X
X
X
A
C
P T
BA
X
X
X
A
C
P T
BA
Plugged
Plugged
X
X
Y
B
Y
B
A
B
Y
X Z1
C
X
Z1
Standard cover
Types of cartridge covers available
Symbolic function
Size 16 Size 25 Size 32 Size 40
Brief code and datasheet no.
CVC16XP* CVC25XP* CVC32XP* CVC40XP*
D 03417 D 03417 D 03417 D 03417
Relief cover
Brief code and datasheet no.
CVC16R*** CVC25R*** CVC32R*** CVC40R***
D 03418 D 03418 D 03418 D 03418
Brief code and datasheet no.
Relief cover with provision of
solenoid unloading normally open
Brief code and datasheet no.
D 03418 D 03418 D 03418 D 03418
CVC16R**A* CVC25R**A* CVC40R**A*CVC32R**A*
Relief cover with provision of
solenoid unloading normally closed
Relief cum unloader, unloading
by pilot pressure
Brief code and datasheet no.
D 03418 D 03418 D 03418 D 03418
CVC16R**B* CVC25R**B* CVC40R**B*CVC32R**B*
CVC16U*** CVC25U*** CVC32U*** CVC40U***
D 03419 D 03419 D 03419 D 03419
X
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All rights reserved.
Subject to revision
D 03426 - CV
ENGINEERING - 6 of 13
***
CVC*2RSA***
P
T
BA
a
b
P T
B
A
A B
B
A
2nd Relief
C
Y
1st Relief
X
For unloading normal position
P
T
X
X X
X
Symbolic function
Size 16 Size 25 Size 32 Size 40
Relief cum unloader, unloading by pilot pressure
with provision for solenoid unloading normally closed
Brief code and datasheet no.
CVC16U**A* CVC25U**A* CVC32U**A* CVC40U**A*
D 03419 D 03419 D 03419 D 03419
Brief code and datasheet no.
D 07032
Cover for 2 manual pressure setting,
electrically selectable with 2nd relief valve on A
CVC16-2RSA*** CVC25-2RSA*** CVC40-2RSA***CVC32-2RSA***
Brief code and datasheet no.
D 03419 D 03419 D 03419 D 03419
CVC16U**B* CVC25U**B* CVC40U**B*CVC32U**B*
C
Z1X
A
B
Y
P T
B
A
X
XX
Z1
C
Z1X
A
B
Y
P
T
BA
X
XX
Z1
Relief cum unloader, unloading by pilot pressure
with provision for solenoid unloading normally open
D 07032 D 07032 D 07032
B
A
X
Y
C
1st Relief
2nd Relief
A
T
P
B
B
A
P
T
X
X
X
X
X
X
C
Y
A
B
Y
A
B
Y
C
X
X
Z1
Z1
Y
a
b
For unloading normal position
A Polyhydron Group Company
D 03426 - CV
ENGINEERING - 7 of 13
All rights reserved.
Subject to revision
***
Cartridge cover details
Symbolic function
Size 16 Size 25 Size 32 Size 40
Cover for 2 manual pressure setting,
electrically selectable with 2nd relief valve on B
Brief code and datasheet no.
Brief code and datasheet no.
Cover with provision for spool type D.C.V solenoid
operated control port normally connected to A
Cover with provision for spool type D.C.V solenoid
operated control port normally connected to A,
with parallel connection available at Z1
Brief code and datasheet no.
D 03428 D 03428 D 03428 D 03428
CVC16DEA* CVC25DEA* CVC40DEA*CVC32DEA*
CVC16DEA-AZ1* CVC25DEA-AZ1* CVC32DEA-AZ1* CVC40DEA-AZ1*
D 03428 D 03428 D 03428 D 03428
D 07032
CVC16-2RSB*** CVC25-2RSB*** CVC40-2RSB***CVC32-2RSB***
D 07032 D 07032 D 07032
P
T
BA
A
B
Y
Y
C
X
X
A
B
Y
Y
C
XZ2
Z2
X
A
B
Y
Y
C
X
X
Z2
Z2
A
B
Y
Y
C
X
X
Z1
Z2
Z1
Z2
A Polyhydron Group Company
All rights reserved.
Subject to revision
D 03426 - CV
ENGINEERING - 8 of 13
***
Symbolic function
Size 16 Size 25 Size 32 Size 40
Cover with provision for spool type D.C.V solenoid
operated control port normally connected to B
Brief code and datasheet no.
CVC16DEB* CVC25DEB* CVC32DEB* CVC40DEB*
D 03428 D 03428 D 03428 D 03428
Brief code and datasheet no.
D 03428 D 03428 D 03428
Cover with provision for spool type D.C.V solenoid
operated control port normally connected to A
and B is available at Z2
D 03428
CVC16DEA-AZ1-BZ2*
Brief code and datasheet no.
D 03428 D 03428 D 03428 D 03428
CVC16DEB-BZ2* CVC25DEB-BZ2* CVC40DEB-BZ2*CVC32DEB-BZ2*
Cover with provision for spool type D.C.V solenoid
operated control port normally connected to B,
with parallel connection available at Z2
Brief code and datasheet no.
D 03428 D 03428 D 03428 D 03428
CVC16DEA-BZ2* CVC25DEA-BZ2* CVC40DEA-BZ2*CVC32DEA-BZ2*
Cover with provision for spool type D.C.V solenoid operated
control port normally connected to A, with parallel
connection available at Z1 and B is available at Z2
CVC25DEA-AZ1-BZ2* CVC32DEA-AZ1-BZ2* CVC40DEA-AZ1-BZ2*
A
B
Y
Y
C
X
X
Z1
Z1
A
B
Y
C
X
X
Z2 Z1
Z1
Y
Z2
Z1
X
C
X
X
Z2
Z1
Z2
B
A
Z2
C
Y
P
Z1X
T
B
A
A Polyhydron Group Company
D 03426 - CV
ENGINEERING - 9 of 13
All rights reserved.
Subject to revision
***
Symbolic function
Size 16 Size 25 Size 32 Size 40
Cover with provision for spool type D.C.V solenoid operated
control port normally connected to B and A is available at Z1
Brief code and datasheet no.
CVC16DEB-AZ1* CVC25DEB-AZ1* CVC32DEB-AZ1* CVC40DEB-AZ1*
D 03428 D 03428 D 03428 D 03428
Brief code and datasheet no.
D 03477 D 03477 D 03477
Cover with built in Shuttle valve
D 03477
CVC16SDEA*
Brief code and datasheet no.
D 03428 D 03428 D 03428 D 03428
CVC16DEB-AZ1-BZ2* CVC25DEB-AZ1-BZ2* CVC40DEB-AZ1-BZ2*CVC32DEB-AZ1-BZ2*
Cover with provision for spool type D.C.V solenoid operated
control port normally connected to B, with parallel
connection available at Z2 and A is available at Z1
Brief code and datasheet no.
D 03424 D 03424 D 03424 D 03424
CVC16S* CVC25S* CVC40S*CVC32S*
Cover with built in Shuttle valve with provision for fitting a
directional spool valve, control port normally connected to port A
CVC25SDEA* CVC32SDEA* CVC40SDEA*
B
A
Z2
C
YZ1
X
B
A
P
T
B
A
Z2
C
Y
Z1 X
B
A
BA
P
T
AB
Z2
C
Y
Z1 X
B
A
B
A
P
T
AB
XX
B
A
X Z1 Y
A Polyhydron Group Company
All rights reserved.
Subject to revision
D 03426 - CV
ENGINEERING - 10 of 13
***
Symbolic function
Size 16 Size 25 Size 32 Size 40
Cover with built in Shuttle valve with provision for fitting a
directional spool valve, control port normally connected to port B
Brief code and datasheet no.
CVC16SDEB* CVC25SDEB* CVC32SDEB* CVC40SDEB*
D 03477 D 03477 D 03477 D 03477
Cover with built in Shuttle valve with
provision for fitting a directional spool valve,
port A of shuttle valve is connected to port B of DCV
Brief code and datasheet no.
D 03495 D 03495 D 03495 D 03495
CVC16SDEAA* CVC25SDEAA* CVC40SDEAA*CVC32SDEAA*
Cover with built in Shuttle valve with
provision for fitting a directional spool valve,
port A of shuttle valve is connected to port A of DCV
Brief code and datasheet no.
D 03495 D 03495 D 03495 D 03495
CVC16SDEAB* CVC25SDEAB* CVC40SDEAB*CVC32SDEAB*
Cover with built in pilot operated check valve
Brief code and datasheet no.
CVC16PC* CVC25PC* CVC32PC* CVC40PC*
D 09809 D 09809 D 09809 D 09809
C
B
A
X
X
XX
B
A
X Z1 Y
Y
X
BA
TP
a
x
A
B
M
Z2
Y
X
BA
TP
a
A
B
x
M
Z2
Cover with stroke limiter
Brief code and datasheet no.
CVC16TSX*
D 03438
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D 03426 - CV
ENGINEERING - 11 of 13
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Subject to revision
***
Symbolic function
Size 16 Size 25 Size 32 Size 40
Brief code and datasheet no.
Cover with stroke limiter, and solonoid provision
with control on A
Brief code and datasheet no.
Cover with built in pilot operated check valve
and stroke limiter
Brief code and datasheet no.
D 62000 D 62000 D 62000 D 62000
CVC16TSA* CVC25TSA* CVC40TSA*CVC32TSA*
Cover with stroke limiter, and solonoid provision
with control on B
CVC16TSX* CVC16TSX* CVC16TSX*
D 03438 D 03438 D 03438
CVC16PCT* CVC25PCT* CVC32PCT* CVC40PCT*
D 09809 D 09809 D 09809 D 09809
D 62000 D 62000 D 62000 D 62000
CVC16TSB* CVC25TSB* CVC40TSB*CVC32TSB*
X Z1
M
YC
x
A
B
x
BA
TP
a
Z2
A
B
A Polyhydron Group Company
All rights reserved.
Subject to revision
D 03426 - CV
ENGINEERING - 12 of 13
***
Symbolic function
Size 16 Size 25 Size 32 Size 40
Cover with stroke limiter, shuttle valve ,
and solonoid provision with control on A
Brief code and datasheet no.
CVC16STSA* CVC25STSA* CVC32STSA* CVC40STSA*
D 09524 D 09524 D 09524 D 09524
Brief code and datasheet no.
Cover for proportional relief valve
------
Brief code and datasheet no.
Cover with stroke limiter, shuttle valve ,
and solonoid provision with control on B
Brief code and datasheet no.
D 09636 D 09636 D 09636 D 09636
CVC16PRS** CVC25PRS** CVC40PRS**CVC32PRS**
Cover with check valve mounting
------ ------ ------
------ ------ ------ ------
CVC16STSB* CVC25STSB* CVC32STSB* CVC40STSB*
D 09524 D 09524 D 09524 D 09524
X
Y
A
B
X
C
P
T
A
B
X
X
X
Y
Z1
X Z1
M
YC
x
A
B
x
BA
TP
a
Z2
A
B
X
A
B
X
C
Z1 Z2
Z1
Z2
A Polyhydron Group Company
D 03426 - CV
ENGINEERING - 13 of 13
All rights reserved.
Subject to revision
***
Symbolic function
Size 16 Size 25 Size 32 Size 40
Cover with built in change over and pressure switch
Brief code and datasheet no.
Brief code and datasheet no.
High cracking pressure cover
------ ------ ------ ------
------ ------ ------ ------
------ ------ N/A N/A
------ ------ N/A N/A
