Parker Hannifin VO40 Handle Actuation vs. Spool Direction, Open-Center Directional Control Valve

Catalog HY17-8505/UK	Open-Center Directional Control Valve
Technical Information	VO40

Handle Actuation vs. Spool Direction

Push Handle

A B

TANKTANK

•Spool Out

•Energize port “B”

•	Port “A” to tank	OPEN	OPEN
		CENTER	CENTER
	Pull Handle	PARALLEL	PARALLEL
		PATH	PATH
•	Spool In		Note:
			Circuit reflects spool
•	Energize port “A”
			position, not handle
•	Port “B” to tank		position.

Left-Hand Joystick				Right-Hand Joystick
	Spool OUT - Section 1				Spool OUT - Section 2
		Power to “B” Port				Power to “B” Port
Spool OUT – Section 2			Spool IN – Section 2	Spool IN – Section 1			Spool OUT – Section 1
Power to “B” Port			Power to “A” Port	Power to “A” Port			Power to “B” Port
	Spool IN – Section 1				Spool IN – Section 2
		Power to “A” Port				Power to “A” Port

Parker Hannifin Corporation