Page 5 - Parker - Check Valves

Catalog HY15-3502/US
Technical Tips Check Valves

CV
Pilot to Close Check (2)
Pilot to close check valves are unique (2) (3)
2 way valves that act as a check Check Valves
valve, allowing free flow in one
(3) (1)
direction and blocking flow from the SH
opposite direction. When an external
pilot pressure is applied, flow is Shuttle Valves
blocked from both directions. (1)
LM
Load/Motor Controls
These products are ideal for regeneration circuits.
See sample diagram shown.

OPERATION - In the absence of adequate pilot pressure, FC
the valve functions as a simple check valve, allowing free 1 2
flow from port 1 to port 2. When adequate pilot pressure at 2 CPC101P
port 3 is applied, the pilot piston holds the poppet closed, Flow Controls
blocking flow in both directions. 1
3 PC
3
MHC-010
Pressure Controls

LE

Logic Elements

DC
Directional Controls

MV

Manual Valves

SV
Solenoid Valves

PV
Proportional Valves

CE

Coils & Electronics

BC
Bodies & Cavities

TD
Technical Data

CV4 Parker Hannifin Corporation
Hydraulic Cartridge Systems