Valves - Directional Controls - Piloted Proportional - 3-position 4-way - Motor Center

PE12-S67D

PROPORTIONAL, PILOT OPERATED DIRECTIONAL VALVE U.S. PATENT NO. 6,554,014

Overview

Description

The PE12-S67D is a screw-in, cartridge-style, proportional, spring centered spool, pilot operated hydraulic directional valve

Operation

In neutral position inlet port 3 is blocked and ports 2, 4 and 5 are communicating with each other. On remote pilot signal at port 1 the valve's spool shifts proportionally to the applied pilot pressure to allow flow from port 3 to port 4, thru a load, such as hydraulic cylinder or motor, and then from port 2 to port 5 and to tank. On remote pilot signal at port 6 the valve's spool shifts proportionally to the applied pressure in the opposite direction, thus reversing the flow direction. The valve's spool is symmetrical providing meter-in and meter-out control

Features

  • Hardened spool and cage for long life.
  • Excellent metering characteristics.
  • Good Linearity.
Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi) Port 3
  • 241 bar (3500 psi) Ports 2, 4
  • 27.6 bar (400 psi) Ports 1, 6
Flow Ratings
Flow rating:
  • 45.4 lpm (12 gpm)
Maximum internal leakage:
  • 164 ml/min (10 in³/min) At 207 bar (3000 psi)
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:
  • 18/16/13 per ISO 4406
Displacement per stroke:
  • 0.65 cm³ (0.039 in³) per stroke direction
Unit weight:
  • 0.44 kg (0.98 lb)
Internal wetted surface area:
  • 415 cm² (64.3 in²)
PE12-S67D_Perf_Chrt1 PE12-S67D_Perf_Chrt2
PE12-S67D_Dim_Dwg

Materials

Cartridge: Weight: 0.45 kg (0.98 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard.

Ported Body: Test housing available.

Cavity:
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Maximum allowable torque:
  • 67.8 N-m (50 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK12-S6X-BMMMM X = seal option
PE12-S67D_Order
POSITION
CODE
DESCRIPTION
PE12-S67D-H-J
H
Line Body
H
0
No Body
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane