Directional Valves — HyPerformance

HPD42-M45 — Piloted 2-Way Spool
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HPD42-M45 Valve

HPD42-M45 Valve symbol

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.

In neutral (unpiloted), the HPD42-M45 blocks flow from 3 to 2 bidirectionally. The spring chamber is
directed to port 4. On remote pilot signal at 1, the valve shifts to block 3 to 2 bidirectionally.
Port 4 is common to the spring chamber. Pressure on 4 will directly (1:1) affect required pilot pressure
and must always be added to the bias spring value.

• 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%.

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: 560 ml/minute (30 cu. in/minute) max at 350 bar (5075 psi)
Pilot Pressure Required:
   To Spool Crossover: 5.51 bar (80 psi) with 180 psi bias spring
   To Full Spool Shift: 12.4 bar (180 psi) with 180 psi bias spring
Oil Volume Required to Full Shift: 5.07 cu. cm. (0.31 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-M4Ux-x; See page 8.650.1


HPD42-M45 Performance Dimensions


Cartridge: Weight: 1.9 kg. (4.2 lbs.);
Steel with hardened work surfaces.
Zinc-nickel plated exposed surfaces; PPDI Urethane O-rings and polyester elastomer back-ups standard.

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

HPD42-M45 Ordering Chart

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