Directional Valves

PD12-42 — Piloted, 3-Way, Spool Valve, Internal Vent
  Selection guide - similar valves.
  PDF file of this page
  STP file for PD12-42
  Request a quote

PD12-42 Valve

PD12-42 Valve symbol

A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic
directional valve for three-way circuits requiring remote pilot actuation.

In neutral (unpiloted), the PD12-42 allows flow from 3 to 2 while blocking at 4.
On remote pilot signal at 1, the valve shifts to allow flow between 3 and 4 while
blocking at 2. Since 4 is common to the spring chamber, pressure on 4 will
directly (1:1) affect the pilot pressure required, and must always be added to the
bias spring value.
Note: Consult factory for applications where bi-directional flow is required when
the valve is in the normal or spring-offset position.

• Hardened spool and cage for long life.
• Cost-effective cavity.

Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 420 bar (6090 psi)
Flow: up to 113 lpm (30 gpm)
Maximum Internal Leakage at 207 bar (3000 psi): 115 cc/minute (7 cu. in./minute)
Pilot Pressure Required using 7.6 bar (110 psi) Spring:
   To Spool Crossover: 7.6 bar (110 psi)
   To Full Spool Shift: 9.1 bar (132 psi)
Oil Volume Required to Full Shift: 1.32 cc (0.08 cu. in.)
Temperature: -40 to 100°C (-40 to 212°F) with Buna seals;
   -26 to 204°C (-15 to 400°F) with fluorocarbon 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: VC12-4; See page 9.112.1_4w
Cavity Tool: CT12-4xx; See page 8.600.1
Seal Kit: SK12-4x-MMM; See page 8.650.1


PD12-42 Valve Performance Chart
PD12-42 Valve Dimensions


Cartridge: Weight: 0.28 kg. (0.61 lbs.);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-ups standard.

Standard Ported Body:
Weight: 1.5 kg. (3.3 lbs.); Anodized high-strength 6061 T6 aluminum alloy, rated to
207 bar (3000 psi). Ductile iron bodies available; dimensions may differ.
See page 8.012.1_4w

PD12-42 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP file for PD12-42. Request a quote.