Directional Valves

PD16-S51 — Piloted, 3-Way, Spool Valve, Vented Spring
  Selection guide - similar valves.
  PDF file of this page
  STP file for PD16-S51
  Request a quote

PD16-S51 Valve

SYMBOL:
PD16-S51 Valve symbol

DESCRIPTION
A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic directional valve
for three-way circuits.

OPERATION
In neutral (unpiloted), the PD16-S51 allows flow between ports 2, 3 and 4. On remote
pilot signal at 1, the valve 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 ports 1, 2, 3 and 4 without affecting required pilot pressure. Pressure at 5 will affect
required pilot pressure.

FEATURES
• Hardened spool and cage for long life.
• 70, 90 and 140 psi bias springs available.

RATINGS
Operating Pressure: 240 bar (3500 psi)
Flow: up to 151 lpm (40 gpm)
Maximum Internal Leakage at 207 bar (3000 psi): 410 ml/minute (25 cu. in./minute)
   between ports 3 and 2. 820 ml/minute (50 cu. in./minute) between ports 3 and 4
Temperature: -40 to 100°C (-40 to 212°F) with Buna seals;
   -26 to 204°C (-15 to 400°F) with fluorocarbon seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1. 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.
Cavity: VC16-S5; See page 9.116.1_5w
Cavity Tool: CT16-S5xx; See page 8.600.1
Seal Kit: SK16-S5x-BMMM; See page 8.650.1

PERFORMANCE:

PD16-S51 Performance Chart
  DIMENSIONS:

PD16-S50 Performance Chart

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.
  ORDERING CHART:

PD16-S51 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP file for PD16-S51. Request a quote.