Directional Valves

PD16-44 — Piloted, 2-Way, Spool Valve, Internal Vent
  Selection guide - similar valves.
  PDF file of this page
  STP file for PD16-44
  Request a quote

PD16-44 Valve

PD16-44 Valve Circuit symbol

A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic directional valve for
two-way circuits requiring remote pilot actuation.

In neutral (unpiloted), the PD16-44 blocks flow between 3 and 2. The spring chamber is
directed to port 4, which is internally O-ring sealed from the cartridge flow paths.
On remote pilot signal at 1, the valve shifts to open flow between 2 and 3, bidirectionally.
Any pressure on port 4 is added to the spring value.

• Hardened spool and cage for long life.
• Optional sealed pilot
• Industry-common cavity.

Operating Pressure: 240 bar (3500 psi)
Flow: up to 189 lpm (50 gpm)
Maximum Internal Leakage 245 ml/minute (15 cu. in./minute) max.
   at 207 bar (3000 psi); zero leakage from port 1 to 2 with sealed spool.
Pilot Pressure Required:
   To Spool Crossover: 7.6 bar (110 psi) with 110 psi bias spring
   To Full Spool Shift: 9.0 bar (130 psi) with 130 psi bias spring
Oil Volume Required to Full Shift: 2.5 cc (0.15 cu. in.)
Temperature: -40 to 100°C (-40 to 212°F) with Buna seals;
   -26 to 204°C (-15 to 400°F) with fluorocarbon seals;
   -54 to 107 °C (-65 to 225 °F) with polyurethane 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
Cavity: VC16-4; See page 9.116.1_4w
Cavity Tool: CT16-4xx; See page 8.600.1
Seal Kit: SK16-4x-MMM; See page 8.650.1


PD16-44 Valve Performance Chart

PD16-44 Valve Dimensions


Cartridge: Weight: 0.52 kg (1.15 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-ups standard.

Standard Ported Body:
Weight: 1.5 kg (3.3 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to
207 bar (3000 psi). Ductile iron bodies available; dimensions may differ.
See page 8.016.1_4w


PD16-44 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP file for PD16-44. Request a quote.