Parker Hannifin VO40 User Manual

Page 21

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Parker Hannifin Corporation

Open-Center Directional Control Valve
VO40

Catalog HY17-8505/UK

[50] – Spool Actuators
C

Spring centered to neutral position.

Spring centered with dual control.

CHA2

Two position detent – spool “IN”.

Detent in neutral and “A” positions.

CHB2

Two position detent – spool “OUT”.

Detent in neutral and “B” positions.

CHB3

Three position detent.

B2A

Spring centered with “IN” detent.

Detent in “A” position and spring centering

to neutral position.

B2B

Spring centered with “OUT” detent.

Detent in “B” position and spring centering

to neutral position.

B2C

Spring centered with detent in two

positions “A” & “B”.

Spring centered with detent in fourth

position, used with float spool.

Hydraulic Remote Actuator – Proportional.

Solenoid Operated – Proportional.

(in development)

Solenoid Operated – On/Off.

ACP

Pneumatic actuator – single ended.

The pneumatic actuator for the VO40 allows the
spool to be operated by a pneumatic signal. The
pneumatic actuator is assembled onto one side
of the work section and the opposite end is open
and available for the addition of a handle. A min.
of 5.5 bar (80 PSI) is required. The threaded
ports are both 1/8" NPT.