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.
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
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)
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
Unit weight:
  • 0.48 kg (1.06 lb)
Internal wetted surface area:
  • 373 cm² (57.9 in²)
PD12-S62_Perf_Chrt
PD12-S62_Dim_Dwg

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).

Cavity:
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK12-S6X-BMMM (x = seal option)
PD12-S62_Order
POSITION
CODE
DESCRIPTION
PD22-S62-H-J-R
H
Line Body
H
0
No Body
H
8TD
Ductile Iron SAE 8
H
10TD
Ductile Iron SAE 10
H
12TD
Ductile Iron SAE 12
H
6BD
Ductile Ion 3/4 in BSPP
J
Seal
J
N
Buna-N
J
NS
Buna-N with a Sealed Spool
J
V
Fluorocarbon
J
VS
Fluorocarbon with a Sealed Spool
J
U
PPDI Urethane
J
US
PPDI Urethane with a Sealed Spool
R
Spring
R
110
110 psi Bias Spring
R
170
170 psi Bias Spring