Directional Valves

PD08-35 — Piloted, 2-Way, Spool, Internal Vent, Normally Open
  Selection guide - similar valves.
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PD08-35 Valve

PD08-35 Valve symbol
A screw-in, cartridge-style, pilot-operated, spool-type, normally open hydraulicz
directional valve for two-way circuits requiring remote pilot actuation.

In neutral (unpiloted), the PD08-35 allows flow between 2 and 3. The spring bias
chamber is internally vented to 3. On remote pilot signal at 1, the valve shifts to
block 2 to 3 bidirectionally.
Note: Back pressure at 3 will increase the pilot pressure required at 1 to shift, at a
ratio of 1:1. Consult factory for applications where bi-directional flow
is required when the valve is in the normal or spring-offset position

• External vent-to-atmosphere.
• Range of bias springs available.
• Sealed spool option for bias spring options 110.
• Hardened spool and cage for long life.
• Industry common cavity.

Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 390 bar (5700 psi)
Flow: up to 18.9 lpm (5 gpm)
Maximum Internal Leakage: 65 cc/minute (4 cu. in./minute) max. at 240 bar (3500 psi)
   Zero leakage from port 1 to 2 with sealed spool.
Temperature: -40 to 100 °C (-40 to 212 °F) with Buna seals;
   -26 to 204 °C (-15 to 400 °F) with fluorocarbon seals;
   -54 to 107 °C (-65 to 225 °F) with polyurethane 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: VC08-3; See page 9.108.1_3w
Cavity Tool: CT08-3xx; See page 8.600.1
Seal Kit: SK08-3x-MM; See page 8.650.1



PD08-35 Valve Performance Chart



PD08-35 Valve Dimensions



Cartridge: Weight: 0.10 kg (0.22 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
seals standard.

Standard Ported Body:
Weight: 0.36 kg (0.80 lb); Anodized
high-strength aluminum alloy, rated
to 207 bar (3000 psi). Ductile iron
bodies available; dimensions may differ.
See page 8.008.1_3w.



PD08-35 Ordering Chart