Parker Hannifin VO40 Piston Head Side of Cylinder, 76 A/B - Work Port Valves, Spacer Section

Catalog HY17-8505/UK	Open-Center Directional Control Valve
Ordering Information – Work Sections	VO40

[62] – Piston Head Side of Cylinder

The default for this field is code M. Codes A and B are only used when asymmetrical spools must be developed. For example, a cylinder that requires meter-in for one direction and meter-out for the other.

MStandard symmetrical spool- cylinder or motor.

APiston head connected with port “A”.

BPiston head connected with port “B”.

[76 A/B] – Work Port Valves

Anti-Cavitation	RV/AC Non-Adjustable
Check

This pertains to the work port accessory options.

/Port not machined.

Y2 Relief Valve cavity plugged.

N2 Anti-cavitation valve.

( ) RV/AC Non-Adjustable: Enter Pressure setting (PSI or Bar). Note: RV Set at 10 LPM (2.6 GPM).

C2 Pilot-Operated Checks (Lock-out valve). Refer to page 16.

Y plug for blocking

RV cavity

[88 A/B] – Work Port Option

/No Restrictor.

Work port restrictors restrict flow in one direction and are free flow in the opposite direction.

Restrict flow “out” of actuator “into” work port.

P1 = 1mm (0.040")		ACTUATOR
P2	= 2mm (0.080")	METER OUT
P3 = 3mm (0.120")			FREE
P4	= 4mm (0.160")

Restrict flow “out” of work port “into” actuator.

N1 = 1mm (0.040")		ACTUATOR
N2	= 1mm (0.080")	METER IN
			FREE
N3	= 1mm (0.120")
N4 = 1mm (0.160")

[90] – Spacer Section

NSpacer Section.

This section connects the open center, parallel path and tank cores between two adjacent work sections. This section is used to provide additional spacing between two work sections. All other fields in the work section code can be left blank. (Contact Parker for size options available.)

TANK

OPEN CENTER

TANK

OPEN

CENTER

PARALLEL PATH

PARALLEL PATH

20 Parker Hannifin Corporation