DIRECTIONAL VALVES
EP10-S38 Piloted Poppet-Type Logic Element
DESCRIPTION
A poppet-type, screw-in, cartridge-style, hydraulic directional element, with multi-func-
tion potential when used with other directional, pressure, or fl ow control devices.
OPERATION
The EP10-S38 is a spring-biased poppet valve which will block ➀ to ➁ or ➁ to ➀ until
pressure at
➀ or ➁ exceeds the cumulative pressure at ➂ and bias spring. With no
pressure at
➂, fl ow will be allowed from ➀ to ➁ or ➁ to ➀ once the bias spring force
is overcome with pressure at
➀ or ➁. When the element is in closed state, the ratio of
areas
➀ and ➁ is 1:1, and the ratio of areas ➀ or ➁ to ➂ is 1:2.
FEATURES
• Multiple function/application potential.
• Low pressure drop.
• Industry common cavity.
RATINGS
Operating Pressure: 350 bar (5000 psi) cartridge; 207 bar (3000 psi) standard
aluminum housing
Flow: See Performance Chart
Internal Leakage: 0.2 cc/minute (.01 cu. in./minute) max. at 240 bar (3500 psi)
Bias Spring Pressure: 11.0 bar (160 psi)
Temperature: -40 to 120°C with standard Buna 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: VC10-S3; See page 9.110.1
Cavity Tool: CT10-S3xx; See page 8.600.1
Seal Kit: SK10-S3x-MM; See page 8.650.1
USASI/ISO:
SYMBOLS
4.510.1
PERFORMANCE (Cartridge Only)
2
2
3
3
1
OR
1
8.3/120
FLOW lpm/gpm
PRESSURE DROP bar/psi
75.8
20
94.4
25
113.6
30
18.9
5
37.9
10
56.8
15
➀ to ➁ or ➁ to ➀ (fully open)
32 cSt/150 ssu oil at 40°C
5.5/80
2.8/40
2
3
1
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DIMENSIONS
Cartridge: Weight: 0.15 kg. (0.32 lbs.)
Steel with hardened work surfaces.
Zinc-plated exposed surfaces.
Buna N O-rings and polyester
elastomer back-ups standard.
Standard Ported Body: Weight:
0.32 kg. (0.70 lbs.) Anodized high-
strength 6061 T6 aluminum alloy,
rated to 207 bar (3000 psi). Ductile
iron bodies available; dimensions
may differ; see page 8.010.1
MATERIALS TO ORDER
EP10-S38
4.510.2
Bias Spring
80 5.52 bar (80 psi)
160 11.0 bar (160 psi)
Seals
N Buna N (Std.)
V Fluorocarbon
P Polyurethane
(for pressures over
240 bar/3500 psi)
Porting
Cartridge Only 0
SAE 8* 8T
SAE 10* 10T
SAE 12* 12T
*SAE 6 pilot port
EP10-S38 - __ __ __ - __ - __ __
47.1
2
3
1
MILLIMETRE
INCH
1.50
38.1
3.00
76.2
ORIFICE DISCS SHOULD NOT
BE USED WITH THIS PRODUCT
1.00
25.4
ACROSS FLATS
TORQUE: 25 ft-lbs
(33.9 Nm) max.
1.50
38.1
0.85
21.6
1.86
2.56
65.0
0.16
4.1
0.59
31.8
2.25
57.2
3.00
76.2
0.34
8.7
1.25
31.8
1
2
3
®
HYDRAFORCE
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®
Blue rectangles are links to other catalog pages.
