Directional Valves — HyPerformance

HPD42-S51 — Piloted, 3-Way, Spool Valve, Vented Spring
  Selection guide - similar valves.
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HPD42-S51 Valve

HPD42-S51 Valve symbol

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

In neutral (unpiloted), the HPD42-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.

• Hardened spool and cage for long life.
• All HyPerformance products are tested to the rigorous standards of the NFPA specification
  T2.6.1 and are tested at a verification level of 90% and an assurance of 99%.

Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 690 bar (10000 psi)
Burst Pressure: 1380 bar (20000 psi)
Flow: with PPDI urethane seals up to 265 lpm (70 gpm) with no flow restrictions.
   With seal option US (PPDI urethane with sealed spool between ports 1 and 2) up to
   246 lpm (65 gpm) with flow restrictions from ports 2-3 and 3-4 up to 114 lpm (30 gpm).
Maximum Internal Leakage: Ports 3-4: 328 ml/minute (20 cu. in./minute) at 350 bar (5075 psi);
   Ports 3-2: 492 ml/minute (30 cu. in./minute) at 350 bar (5075 psi)
Cycle Life: One million cycles
Operating Temperature: -54° to 107°C (-65° to 225°F) with 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-S5; See page 9.142.1_5w
Cavity Tool: HCT42-S5xx; See page 8.600.1
Seal Kit: HSK42-S5x-OOOO (Urethane); See page 8.650.1


HPD42-S51 Performance Chart

HPD42-S51 Dimensions


Cartridge: Weight: 1.9 kg. (4.2 lbs.);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; PPDI Urethene seals with no back-ups standard.

Ported Body
: Weight: 14.0 kg
(30.90 lbs) H-series ductile iron standard. Rated to 345 bar (5000 psi).
See page 8.042_5w.

HPD42-S51 Ordering Chart

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