Cartridge Valves - Directional Control Valves - Pilot Operated On/Off - 2-Position 2-Way - Atmospheric Vent - Normally Open

PD12-45

PILOTED DIRECTIONAL VALVE

Overview

Description

The PD12-45 is a screw-in, cartridge style, pilot-operated, spool type, hydraulic directional valve.

Operation

In neutral position the valve allows flow from port 2 to 3 bidirectionally. On remote pilot signal at port 1, the valve's spool shifts to block flow from port 2 to 3. The spring chamber is vented to port 4 which is internally o-ring sealed from the cartridge flow paths. Pressure on port 4 will directly (1:1) affect the pilot pressure required and must be added to the bias spring value.

Features

  • Hardened spool and cage for long life.
  • Cost-effective cavity.
Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi) Ports 2 and 3
  • 207 bar (3000 psi) Port 1
  • 34 bar (500 psi) Port 4
Flow Ratings
Flow rating:
  • See performance graph
Maximum internal leakage:
  • 245 ml/min (15 in³/min) At 207 bar (3000 bar)
  • Zero leakage from port 1 to 2 with sealed spool
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 viton seals
  • -54 to 107 °C (-65 to 225 °F) With polyurethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °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:
  • 0.42 kg (0.92 lb)
Internal wetted surface area:
  • 343 cm² (53.18 in²)
PD12-45_PERF(2024-10-31)
PD12-45_DIM(2024-10-31)
Cavity:
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK12-4X-MMM X = seal option
PD12-45_ORDER(2024-10-31)

Model Options

PD12-45-H-J-R
H Line Body
CODE
DESCRIPTION
0
No Body
10T
Aluminum SAE 10
12T
Aluminum SAE 12
12TD
Ductile Iron SAE 12
J Seal
CODE
DESCRIPTION
N
Buna-N
NS
Buna-N with a Sealed Spool
V
Fluorocarbon
VS
Fluorocarbon with a Sealed Spool
P
Polyurethane
PS
Polyurethane with a Sealed Spool
U
PPDI Urethane
US
PPDI Urethane with a Sealed Spool
R Spring
CODE
DESCRIPTION
110
110 psi Bias Spring
170
170 psi Bias Spring