DESCRIPTION
A high pressure, poppet-type, screw-in, cartridge-style, spring-biased, bi-directional
blocking-type hydraulic valve with two built-in checks. When used in conjunction
with a small pilot solenoid valve, the HEP42-S39 is ideal for either high-flow double-
blocking circuits or selector circuits. The integral two-check system prevents leak-
age, maintaining the pilot signal regardless of the transition or the work-port pressure
changes.
OPERATION
The HEP42-S39 will allow flow from 1 to 2 or 2 to 1 only when 3 is vented to
create a pressure differential across the internal orifice which exceeds the pressure
value of the bias spring. When the element is in the neutral (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.
Proof Pressure: 690 bar (10000 psi)
Burst Pressure: 1380 bar (20000 psi)
Flow: 284 lpm (75 gpm)
Internal Leakage: 12 drops per minute max. at 350 bar (5075 psi)
Operating Temperature: -54 to 107°C (-65 to 225°F) with 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-S3; See page 9.142.1
Cavity Tool: HCT42-S3XX; See page 8.600.1
Seal Kit: SK42-S3X-MM; See page 8.650.1
DIRECTIONAL VALVES
HEP42-S39 HyPerformance
TM
Vented Poppet-type
USASI/ISO:
PERFORMANCE (Cartridge Only)
SYMBOLS
4.517.1
HYDRAFORCE
.com
®
2
3
1
➀ to ➁ – – –; ➁ to ➀ ——
Fully open and with port ➂ vented
32 cSt/150 sus oil at 40°C
6.9/100
5.5/80
76
20
38
10
151
40
114
30
227
60
189
50
FLOW lpm/gpm
PRESSURE DROP bar/psi
303
80
265
70
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 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
160 11.0 bar (160 psi)
HEP42-S39
DIMENSIONS
MATERIALS
TO ORDER
HEP42-S39
-__ __ __ - __ - 160
4.517.2
®
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 w/Built-in Checks
Seals
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.
