The Covers CVC*R 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 pilot operated relief function, when combined with a valve having a poppet
area ratio of 1:1.
The covers have options of having pressure adjustment facility by means of Set
screw or a Hand knob.Clockwise rotation of the screw increases the pressure setting.
These covers are also available with an optional facility to mount on them, a Solenoid
operated Directional Control Valve to give the combination an added feature of
unloading a pump or regulating pressure and exhausting a cylinder side by means
of an electrical signal to the Solenoid.
A Polyhydron Group Company
Description
Section
Hydraulic symbol
RELIEF COVER
Model : CVC*R
Ref. No. D 03418
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
X
A
B
C
Y
B
A
X
X
X
X
X
A
C
P T
BA
X
X
X
A
C
P T
BA
CVC*R**
CVC*R**A
A Type (Normally closed)
CVC*R**B
B Type (Normally open)
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
C
Plugged Plugged
Y
X X
Y
B
Y
B
A/B
T
A/B