Valves - Directional Controls - Piloted Directional Valve - 2-position 2-way - Internal Vent - Normally Open

PD12-35

PILOTED DIRECTIONAL VALVE ELEMENT

Overview

Description

The PD12-35 is a screw-in, cartridge style, pilot-operated, spool type, normally open, hydraulic directional valve

Operation

In neutral position the valve allows flow from port 2 to 3. The spring chamber is internally vented to port 3. On remote pilot signal at port 1, the valve's spool shifts to block flow from port 2 to 3. Pressure on port 3 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.
  • Industry common cavity.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Temperature Ratings
Operating fluid temperature:
  • -40 to 120 °C (-40 to 248 °F)
Flow Ratings
Maximum internal leakage:
  • 245 ml/min (5 in³/min) From port 1 and 2 and from port 2 and 3 (when piloted), at 207 bar (3000 psi)
  • 0 lpm (0 gpm) From port 1 and 2 with sealed spool
Materials:
  • steel with work surfaces hardened. External surfaces are zinc plated
Unit weight:
  • 0.23 kg (0.50 lb)
PD12-32_Perf_Chrt
PD12-32_Dim_Dwg

Materials

Cartridge: Weight: 0.23 kg (0.50 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard.

Standard Ported Body : Weight: 1.13 kg (2.50 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi). Ductile iron bodies available; dimensions may differ.

Cavity:
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Seal kit:
  • SK12-3N-MM Buna N
  • SK12-3V-MM Viton
  • SK12-3P-MM Polyurethane
PD12-35_Order
POSITION
CODE
DESCRIPTION
PD12-35-H-J-R
H
Line Body
H
0
No Body
H
8T
Aluminum SAE 8
H
10T
Aluminum SAE 10
H
12T
Aluminum SAE 12
H
12TD
Ductile Iron SAE 12
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
P
Polyurethane
J
PS
Polyurethane 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