DIRECTIONAL VALVES
HEP42-S35 HyPerformance
TM
Piloted Spool-Type
USASI/ISO:
PERFORMANCE (Cartridge Only)
SYMBOLS
4.505.1
DESCRIPTION
A high-pressure spool-type, screw-in, cartridge-style, hydraulic directional element,
with multi-function potential when used with other directional, pressure, or flow control
devices.
OPERATION
The HEP42-S35 is a spring-biased blocking valve which will shift to allow full flow
from 1 to 2 only when pressure at 1 exceeds the cumulative pressure of 3, plus the
bias spring pressure value.
HEP42-S35 is a pilot-to-close directional valve.
With no pressure at 3, flow will be allowed from 1 to 2 once the bias spring force
is overcome with pressure at 1.
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
Burst Pressure: 1380 bar (20000 psi)
Flow: 379 lpm (100 gpm)
Internal Leakage: 164 ml/minute (10 cu. in./minute) max. at 350 bar (5075 psi)
Operating Temperature: -40 to 100°C (-40 to 212°F) with Buna N seals
-26 to 204°C (-15 to 400°F) with Fluorocarbon seals
-54 to 107°C (-65 to 225°F) with Urethane seals
Ambient Temperature: -40 to 90°C
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-S3X-X; See page 8.650.1
HYDRAFORCE
.com
®
6.9/100
5.5/80
76
20
151
40
227
60
FLOW lpm/gpm
PRESSURE DROP bar/psi
303
80
379
100
➀ to ➁ Fully Open
32 cSt/150 sus oil at 40°C
2.8/40
4.1/60
1.4/20
Blue rectangles are links to other catalog pages.
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
Cartridge: Weight: 1.04 kg. (2.30 lbs.)
Steel with hardened work surfaces.
Zinc-nickel plated exposed surfaces.
PPDI Urethane seals with no backup
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 20TD
1-1/4 in. BSP* 10BD
*BSP Body; U.K. Mfr. Only
Bias Spring Value
20 1.4 bar (20 psi)
50 3.4 bar (50 psi)
80 5.5 bar (80 psi)
175 12.1 bar (175 psi)
HEP42-S35
DIMENSIONS
MATERIALS
TO ORDER
HEP42-S35
-__ __ __ - __ - __ __
4.505.2
®
HYDRAFORCE
HYDRAFORCE
.com
®
Logic Element
Seals
N Buna N
V Fluorocarbon
U PPDI Urethane
— Recommended for
pressures above 241 bar (3500 psi
Orifice Discs Cannot Be Used
with this Valve due to
HyPerformance
TM
Cavity.
Blue rectangles are links to other catalog pages.
