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

PD16-S51

PILOTED DIRECTIONAL VALVE

Overview

Description

The PD16-S51 is a screw-in, cartridge style, pilot operated, spool-type hydraulic directional valve.

Operation

In the neutral position flow is allowed between ports 2,3,and 4. On remote pilot signal at port 1 the valve's spool shifts to block all ports. The spring chamber is vented to the tank through port 5. The vented spring chamber allows the valve to be fully pressurized at port 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.
  • 70, 90 and 140 psi bias springs available.
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:
  • 410 ml/min (25 in³/min) Between ports 3 and 2 at 207 bar (3000 psi)
  • 820 ml/min (50 in³/min) Between ports 3 and 4
Materials:
  • Steel with work surfaces hardened, external surfaces are zinc plated. Buna N o-rings standard
PD16-S51_Perf_Chrt(2022-02-24)
PD16-S50_Dim_Dwg(2022-02-24)
Cavity:
Cartridge installation torque:
  • 62.4 to 73.2 N-m (46 to 54 ft-lb)
PD16-S51_Order(2022-02-24)
POSITION
CODE
DESCRIPTION
PD16-S51-H-J-R
H
Line 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
70
70 psi Bias Spring
R
90
90 psi Bias Spring
R
140
140 psi Bias Spring