Valves - Directional Controls - Piloted Directional Valve - 2-position 3-way

PD16-S50

PILOTED DIRECTIONAL VALVE

Overview

Description

The PD16-S50X is a screw-in, cartridge style, pilot operated, spool type, hydraulic directional valve

Operation

In the neutral position flow is allowed between ports 3 and 2, while blocking flow at port 4. On remote pilot signal at port 1 the valve shifts to allow flow between ports 3 and 4, while blocking flow at port 2. The spring chamber is vented to the tank through port 5. The vented spring chamber allows the valve to be fully pressurized at ports 1, 2, 3 and 4 without affecting required pilot pressure. Pressure at port 5 will affect required pilot pressure

Features

  • Hardened spool and cage for long life.
  • 50, 70, 100 and 150 psi bias springs available.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Flow Ratings
Flow rating:
  • See performance graph
Maximum internal leakage:
  • 245 ml/min (15 in³/min) At 207 bar (3000 psi). Zero leakage from port 1 to port 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)
Ambient 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:
  • 0.68 kg (1.50 lb)
Internal wetted surface area:
  • 478.5 cm² (74.16 in²)
PD16-S50_Perf_Chrt
PD16-S50_Dim_Dwg

Materials

Cartridge: Weight: 0.68 kg (1.50 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard.

Ported Body: Consult factory.A 6-way body can be used for this valve by plugging body port 2 and using body ports 3, 4, 5 and 6 as ports 2, 3, 4 and 5 for the valve.

PD16-S50_Order
POSITION
CODE
DESCRIPTION
PD16-S50B-H-J-R
B
Spool Option
B
BLANK
Standard
B
N
Normally Open in Transition
H
Line Body
H
0
No Body
H
0
No Body
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
50
50 psi Bias Spring
R
70
70 psi Bias Spring
R
100
100 psi Bias Spring
R
150
150 psi Bias Spring