Parker Hannifin VO40 Specifications, Open-Center Directional Control Valve, Technical Information

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

Specifications

Pressures	Inlet Port: 300 bar (4350 PSI)
	Tank Port: 50 bar (725 PSI)
	Work Ports: 300 bar (4350 PSI)
Flow Rates	40 LPM (10.6 GPM)
(maximum
recommended)
Internal Pilot	Required for solenoids –
Pressure	contact Parker
Spool Leakage	Max. 6 mL/min @172 bar (2500 PSI)
from work port	Oil temp. 50ºC (122ºF), and viscosity
to tank	40 cSt

Weights

Weights are approximate due to number of variations available.

Inlet with relief	1.92 kg (4.2 lbs)
Outlet	1.88 kg (4.1 lbs)
Work section with reliefs and	1.93 kg (4.3 lbs)
manual actuator
Work section and manual actuator	1.98 kg (4.4 lbs)
without reliefs
Work Section, PO Checks with	2.1 kg (4.6 lbs)
manual actuator
Joystick assembly	0.8 kg (1.8 lbs)

Connections

Standard valves are available in 3/8" BSP (DIN 3852/2), SAE-6 or SAE-8 (J1926/1).

Connection	Location	SAE -8	SAE-6	BSP
P1, P2	Inlet	¾-16 UNF	>\zn-18 UNF	C\,-19
T1, T2	Inlet	¾-16 UNF	>\zn-18 UNF	C\,-19
P3	Outlet	¾-16 UNF	>\zn-18 UNF	C\,-19
T3	Outlet	¾-16 UNF	>\zn-18 UNF	C\,-19
PB1	Outlet	¾-16 UNF	>\zn-18 UNF	C\,-19
Work Ports	Work	¾-16 UNF	>\zn-18 UNF	C\,-19
	Sections
GAGE	Inlet	M\zn-20 UNF	M\zn-20 UNF	¼
PORT
PC	Work	M\zn-20 UNF	M\zn-20 UNF	¼
(Hyd. Conn.)	Sections
PT	Work	Z\, NPT	Z\, NPT	Z\, NPT
(Pneu.Conn.)	Sections

Parker Hannifin Corporation