DIRECTIONAL VALVES

PD10-34 Piloted 2-Way Spool, Normally Closed,

DESCRIPTION

A screw-in, cartridge-style, pilot-operated, spool-type, normally closed, hydraulic

directional valve for two-way circuits requiring remote pilot actuation.

OPERATION

In neutral (unpiloted), the PD10-34 blocks ﬂ ow from ➂ to ➁ bidirectionally.

V is a spring chamber vent-to-atmosphere, which is internally O-ring sealed from the

cartridge ﬂ ow paths.

On remote pilot signal at

➀, the valve shifts to open ➁ to ➂ bidirectionally.

Because of the vented spring chamber, the cartridge may be fully pressurized at any

port without affecting required pilot pressure.

FEATURES

• Hardened spool and cage for long life.

• Industry common cavity.

RATINGS

Operating Pressure: 240 bar (3500 psi)

Proof Pressure: 390 bar (5700 psi)

Flow: See Performance Chart

Internal Leakage: 82 cc/minute (5 cu. in./minute) max. at 207 bar (3000 psi)

Pilot Pressure Required: To Full Spool Shift:

for 4.1 bar (60 psi) spring: 4.7 bar (68.2 psi)

for 7.6 bar (110 psi) spring: 8.6 bar (125 psi)

Oil Volume Required to Full Shift: 0.65 cc (0.04 cu. in.)

Temperature: -40 to 120°C with standard Buna seals

Filtration: See page 9.010.1

Fluids: Mineral-based or synthetics with lubricating properties at viscosities of

7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1

Installation: No restrictions; See page 9.020.1

Cavity: VC10-3; See page 9.110.1

Cavity Tool: CT10-3XX; See page 8.600.1

Seal Kit: SK10-3X-MM; See page 8.650.1

Cap Vent Seal: 6003117

SYMBOLS

USASI: ISO:

PERFORMANCE (Cartridge Only)

4.328.1

6.9/100

5.2/75

3.4/50

1.7/25

7.5

15.1

30.2

FLOW lpm/gpm

PRESSURE DROP bar/psi

37.9

22.7

32 cSt/150 ssu oil at 40°C

➂➁

Note: This valve is designed with a dynamic oil-to-atmosphere seal in the vent

section. Ambient conditions will cause this vent seal to degrade which will reduce the

valve’s cycle life. If this could cause a problem, we suggest that a non-vented model

be selected, or special seal be used. Consult factory for assistance.

HYDRAFORCE

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DIMENSIONS

Cartridge: Weight: 0.15 kg. (0.34 lbs.)

Steel with hardened work surfaces;

Zinc-plated exposed surfaces.

Buna N O-rings and polyester

elastomer back-ups standard.

Standard Ported Body: Weight:

0.36 kg. (0.80 lbs.) Anodized high-

strength 6061 T6 aluminum alloy,

rated to 207 bar (3000 psi).

Ductile iron and steel bodies

available; dimensions may differ.

See page 8.010.1.

TO ORDER

Porting

Cartridge Only 0

SAE 6 6T

SAE 8 8T

1/4 in. BSP* 2B

3/8 in. BSP* 3B

*BSP Body

U.K. Mfr. Only

Bias Spring

†

40 2.8 bar (40 psi)

60 4.1 bar (60 psi)

110 7.6 bar (110 psi)

170 11.7 bar (170 psi)

PD10-34 - __ __ __ - __ -__ __ __

PD10-34

4.328.2

External Vent

†

Note: 110 psi bias spring is the

minimum required for use with

sealed spool.

Seals

N Buna N (Std.)

NS Buna N with Sealed Spool

V Fluorocarbon

VS Fuorocarbon with Sealed Spool

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MATERIALS

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