Directional Valves — HyPerformance

HPD42-M44 — Piloted 2-Way Spool
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HPD42-M44 Valve

SYMBOL:
HPD42-M44 Valve symbol

DESCRIPTION
A high performance, screw-in, cartridge-style, pilot-operated, spool-type, hydraulic directional valve
for two-way circuits, requiring remote pilot actuation and vented spring chamber.

OPERATION
In neutral (unpiloted), the HPD42-M44 blocks flow from 2 to 3 and 3 to 2 on remote pilot signal at
port 1. The valve's spool shifts to allow flow from port 2 to 3 and port 3 to 2. The spring chamber is
vented to port 4. Pressure at port 4 will directly (1:1) affect the pilot pressure required and must be
added to the bias spring value.

FEATURES
• Multiple function/application potential.
• Smooth shift transition.
• Low pressure drop.
• Hardened spool and cage for long life.
• Optional sealed pilot.
• Industry-standard ISO cavity
• All HyPerformance products are tested to the rigorous standards of the NFPA specification T2.6.1.
• All HyPerformance valves are tested at a verification level of 90% and an assurance of 99%.

RATINGS
Operating Pressure: 350 bar (5075 psi); 10% cycle life: 420 bar (6090 psi)
   Note: All HyPerformance products are tested for 900K cycles at 350 bar and 100K at 420 bar.
Fatigue Rating: 2 million cycles at 420 bar
Burst Pressure: 1380 bar (20000 psi)
Flow: 265 lpm (70 gpm)
Internal Leakage: 310 ml/minute (19 cu. in/minute) at 350 bar (5075 psi)
Pilot Pressure Required:
   To Spool Crossover: 10.3 bar (150 psi) with 150 psi bias spring
   To Full Spool Shift: 17.9 bar (260 psi) with 150 psi bias spring
Oil Volume Required to Full Shift: 6.22 cc (0.38 cu. in.)
Operating Temperature: -54° to 107°C (-65° to 225°F) with standard PPDI Urethane 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: HVC42-M4; See page 9.142_4w
Cavity Tool: HCT42-M4xx; See page 8.600.1
Seal Kit: SK42-M4U-000 (Urethane); See page 8.650.1

PERFORMANCE & DIMENSIONS:

HPD42-M44 Performance Dimensions

MATERIALS:

Cartridge: Weight:1.9 kg. (4.2 lbs.);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; PPDI Urethane seals and no backup rings standard.

Ported Body: Weight: 10.68 kg.
(23.56 lbs.); H-series ductile iron standard. Rated to 345 bar (5000 psi).
See page 8.042.1_4w
  ORDERING CHART:

HPD42-M44 Ordering


Selection guide - similar valves.
PDF file of this page. Request a quote.