DESCRIPTION
A high-pressure poppet-type, screw-in, cartridge-style, spring-biased, bi-directional
blocking-type hydraulic directional element with multi-function potential when used
with other directional, pressure, or flow control devices.
OPERATION
The HEP42-S38 is a spring-biased poppet valve which will block 1 to 2 or 2 to 1
until pressure at 1 or 2 exceeds the cumulative pressure at 3 and bias spring.
With no pressure at 3, flow will be allowed from 1 to 2 or 2 to 1 once the bias spring
force is overcome with pressure at 1 or 2.
When the element is in the closed state, the ratio of areas 1 and 2
is 1:1, and the ratio
of areas 1 or 2 to 3
is 1:2.
FEATURES
• Multiple function/application potential.
• Low pressure drop.
• 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 (6090 psi)
Proof Pressure: 690 bar (10,000 psi)
Burst Pressure: 1380 bar (20000 psi)
Flow: Up to 284 lpm (75 gpm)
Internal Leakage: 12 drops/minute max. at 350 bar (5075 psi)
Operating Temperature: -54 to 107°C (-65 to 225°F) with Urethane seals
Ambient Temperature: -40 to 90°C (-40 to 194°F)
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-S3; See page 9.142.1
Cavity Tool: HCT42-S3XX; See page 8.600.1
Seal Kit: SK42-S3U-OO with Urethane seals; See page 8.650.1
DIRECTIONAL VALVES
HEP42-S38 HyPerformance
TM
Piloted Poppet-Type
PERFORMANCE (Cartridge Only)
SYMBOL
4.514.1
HYDRAFORCE
.com
®
2
3
1
1 to 2 - - - -; 2 to 1 ——
Fully Open, with Port 3 Vented
32 cSt/150 sus oil at 40°C
6.9/100
5.5/80
76
20
151
40
227
60
FLOW lpm/gpm
PRESSURE DROP bar/psi
303
80
2.8/40
4.1/60
1.4/20
Blue rectangles are links to other catalog pages.
Cartridge: Weight: 1.04 kg. (2.30 lbs.)
Steel with hardened work surfaces.
Zinc-nickel plated exposed surfaces.
PPDI Urethane seals with no back-up
rings standard.
Ported Body: Weight: 9.03 kg.
(19.9 lbs.); HyPerformance™
Ductile iron (code ‘D’) standard.
Rated to 345 bar (5000 psi).
Porting
Cartridge Only 0
SAE 20 Ductile Iron 20TD
1-1/4" BSP Ductile Iron* 10BD
*BSP body U.K. Mfr. Only
Bias Spring Value
40 2.8 bar (40 psi)
80 5.5 bar (80 psi)
160 11.0 bar (160 psi)
HEP42-S38
DIMENSIONS
MATERIALS
TO ORDER
HEP42-S38
-__ __ __ - __ - __ __
4.514.2
®
HYDRAFORCE
HYDRAFORCE
.com
®
1.41
35.8
3.12
79.2
M42 x 2 – 6g
2.00
50.8
ACROSS FLATS
TORQUE:
290 to 300 ft-lbs
0.34
8.6
2.07
52.6
3.93
99.8
0.29
7.37
5.00
127
4.36
110.8
0.92
23.4
4.00
101.6
4.50
114.3
2.00
50.8
394 to 420 Nm
Logic Element
Seals
U PPDI Urethane
— Recommended for
pressures above 241 bar (3500 psi
NOTE: Consult factory for additional seal options.
Orifice Discs Cannot Be Used
with this Valve due to
HyPerformance
TM
Cavity.
Blue rectangles are links to other catalog pages.
