Valves - Directional Controls - Piloted Directional Valve

PD12-S62

PILOTED DIRECTIONAL VALVE

Overview

Description

The PD12-S62 is a screw-in, cartridge style, pilot operated, spool-type, normally closed, hydraulic directional valve

Operation

In the neutral position flow is allowed between ports 2 and 3 and between ports 4 and 5 bidirectionally. On remote pilot signal at port 1 the valve's 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 port 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

Pressure Ratings
Pressure rating
241 bar (3500 psi)
Flow Ratings
Maximum inlet 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, 10 + 5 gpm, etc
Maximum internal leakage
246 ml/min (15 in³/min) At 207 bar (3000 bar)
Temperature Ratings
Maximum operating fluid temperature
-40 to 100 °C (-40 to 212 °F) With buna N seals
-26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
-54 to 107 °C (-65 to 225 °F) With polyurethane seals
Storage temperature
-40 to 70 °C (-40 to 160 °F)
Ambient temperature
-40 to 90 °C (-40 to 194 °F)

Operating Parameters

Fluids
Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range
7.4 to 420 cSt
Maximum operating contamination level
20/18/14 per ISO 4406

Properties

Cartridge weight
0.48 kg (1.06 lb)
Internal wetted surface area
373 cm² (57.9 in²)

Performance

PD12-S62_Perf_Chrt

Dimensions

PD12-S62_Dim_Dwg

Materials

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).

Installation Specifications

Cavity
VC12-S6
Cartridge installation torque
44.7 to 50.2 N-m (33 to 37 ft-lb)
Orientation restriction
None

Accessories

Seal kit
SK12-S6X-BMMM (x = seal option)

Order code

PD12-S62_Order