The Covers CVC*SDEAA and CVC*SDEAB are designed to hold Polyhydron make 2 port
slip-in cartridge valves model CV*** in the cavities machined as per ISO 7368, with built in
facility to control the operation of the cartridge valve as under,
Refering to the circuits shown below, the built-in Shuttle valve in the cover selects higher
of the pilot pressures brought to the cover at its ports X and from either A (in case of cover
model CVC*SDEAA) or B (in case of cover model CVC*SDEAB) to the control port C of
the cartridge valve.
Thus, these configurations are very convenient in cartridge circuits when one wishes to
use a Cartridge valve as a solenoid controlled leakage-free gate ( leakage-free in the
direction of the cartridge from port B to port A) . This can be achieved by connecting
control port X to port B of the cartridge in manifold.
If done so , by using the cover model CVC*SDEAA , with solenoid in de-energized
condition, one can achieve a function of free flow with check from its port A to port B . By
energizing the solenoid , the passage in the cartridge (from port A to B or B to A) can be
blocked.
By using the cover model CVC*SDEAB, with solenoid de-energizes condition, one can
block the passage in the cartridge (from port A to B or B to A). By energizing the solenoid ,
free flow with check from its port A to port B can be achieved.
A Polyhydron Group Company
Description
Hydraulic symbol
COVER WITH BUILT IN SHUTTLE VALVE
FOR FITTING DIRECTION CONTROL VALVE
Model : CVC*SDEA*
Ref. No. D 03495
Release 11 / 2014
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
Section
Z2
C
Y
Z1 X
A/B
TA/B
Y
Z2
C
P
Z1
X
A
B
B
A
BA
P
T
Z2
C
Y
Z1 X
B
A
BA
P
T
A
ABB
CVC*SDEAA
CVC*SDEAB