DIRECTIONAL VALVES
HPD42-S50 HyPerformance
TM
Piloted 3-Way Spool
DESCRIPTION
A high pressure, screw-in, cartridge-style, pilot-operated, spool-type, hydraulic
directional valve.
OPERATION
When in neutral, the HPD42-S50 allows flow between ports 3 and 2 bidirectionally
while port 4 is blocked. On remote pilot signal at 1, the valve’s spool shifts to block
port 2 while opening flow between ports 3 and 4 bidirectionally. 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 at port
5. Pressure at port 5 will increase the required pilot pressure at a 1:1 ratio.
FEATURES
• Hardened spool and cage for long life.
• 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: Two million cycles at 420 bar (6090 psi)
Proof Pressure: 690 bar (10000 psi)
Burst Pressure: 1380 bar (20000 psi)
Flow Rating: 265 lpm (70 gpm) with seal options N, V and U.
246 lpm (65 gpm) with seal options NS, VS and US.
Maximum Internal Leakage: 350 bar (5075 psi) at 32 cSt.
HPD42-S50:
Ports 3-4: 328 ml/min. (20 cu.in./min.)
Ports 3-2: 492 ml/min. (30 cu.in./min.) Pilot Pressure 350 bar (5075 psi)
HPD42-S50N:
Ports 3-4: 410 ml/min. (25 cu.in./min.)
Ports 3-2: 655 ml/min. (40 cu.in./min.) Pilot Pressure 350 bar (5075 psi)
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
Cavity Tool: HCT42-S5XX; See page 8.600.1.
Seal Kit: HSK42-S5U-0000 (Urethane); See page 8.650.1.
SYMBOLS
PERFORMANCE
(Cartridge Only)
4.373.3
3
2
1
4
5
13.8/200
10.3/150
6.9/100
3.4/50
38
10
76
20
189
50
151
40
114
30
FLOW lpm/gpm
PRESSURE DROP bar/psi
Port 3 to 2 Port 3 to 4
32 cSt/150 sus oil at 40°C
227
60
265
70
ISO: TRANSITION:
HYDRAFORCE
.com
®
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Cartridge: Weight: 1.9 kg. (4.2 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
PPDI Urethane seals and no
back-up rings standard.
DIMENSIONS
MATERIALS TO ORDER
HPD42-S50
4.373.4
HPD42-S50 __ - __ __ __ - __ - __ __ __
Porting
Cartridge Only 0
SAE 20 20TD
1-1/4" BSP 10BD
Option
None Blank
Open Transition N
Bias Spring
160 11 bar (160 psi)
Optional bias springs considered
on OEM request.
Seals
U PPDI Urethane
Sealed spool between ports 1 and 2
Note: PPDI Urethane seals are recommended
for pressures over 241 bar (3500 psi).
Note: Consult factory for additional seal
options.
1.99
50.4
ACROSS FLATS
ORIFICE DISC SHOULD NOT
BE USED WITH THIS PRODUCT.
TORQUE:
290 to 310 ft-lbs
(394 to 420 Nm)
INCH
MILLIMETRE
2.72
69.0
5.71
3
145.0
2
1
4
5
®
HYDRAFORCE
HYDRAFORCE
.com
®
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