Directional Valves

PD12-S62 — Piloted Directional Valve, Normally Closed
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PD12-S62 Valve

SYMBOL:
PD12-S62 Valve symbol

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

OPERATION
In neutral position, the PD12-S62 allows flow between ports 2 and 3 and between
ports 4 and 5 bidirectionally. When the remote pilot signal at 1 exceeds the force
of the bias spring, the spool shifts to block flow at all ports.
The spring chamber is vented to the tank through port 6. The vented spring chamber
allows the valve to be fully pressurized at ports 1, 2, 3, 4 and 5 without affecting required
pilot pressure. Pressure at 6 will affect required pilot pressure.

FEATURES
• Hardened spool and cage for long life.
• Optional sealed spool between ports 1 and 2.
• Choice of two bias spring values.
• Vented spring chamber.

RATINGS
Maximum Operating Pressure: 250 bar (3625 psi) with standard Buna N seals
Maximum Total Input Flow: 57 lpm (15 gpm) in any combination of flows between
   ports 2 and 3, and ports 4 and 5 (e.g., 3 & 12 gpm, 7 & 8 gpm, or 10 & 5 gpm)
Maximum Internal Leakage: Maximum leakage at 207 bar (3000 psi): 246 ml/minute (15 cu. in./minute)
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: VC12-S6; See page 9.112.1_6w
Cavity Tool: CT12-S6x; See page 8.600.1
Seal Kit: SK2-S6x-BMMM; See page 8.650.1

 

PERFORMANCE:

PD12-S62 Valve Performance Chart
DIMENSIONS:

PD12-S62 Valve Dimensions

 


MATERIALS:

Cartridge: Weight: 0.48 kg. (1.06 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces. Buna N O-rings and polyester elastomer back-ups standard.

Ported Body: Weight: 4.05 kg (8.93 lb.)
H-series ductile iron standard. Rated to
345 bar (5000 psi). See page 8.012.1.
ORDERING CHART:

PD12-S62 Ordering Chart