DIRECTIONAL VALVES

EV10-S34 Vented Spool-Type Logic Element

DESCRIPTION

A spool-type, screw-in, cartridge-style, hydraulic directional element, with multi-

function potential when used with other directional, pressure, or ﬂ ow control devices.

OPERATION

The EV10-S34 is a spring-biased blocking valve which will shift to allow full ﬂ ow from

➀ to ➁ only when ➂ is vented to create a pressure drop across the internal oriﬁ ce

which exceeds the pressure value of the selected bias spring force.

EV10-S34 is a vent-to-open directional valve.

FEATURES

• Multiple function/application potential.

• Smooth shift transition.

• Low pressure drop.

• Industry common cavity.

RATINGS

Operating Pressure: 345 bar (5000 psi) cartridge; 240 bar (3500 psi) standard

aluminum housing

Flow: See Performance Chart

Internal Leakage: 164 cc/minute (10 cu. in./minute) max. at 207 bar (3000 psi)

Bias Spring Pressure Options:

0.7 bar (10 psi);

2.8 bar (40 psi);

5.5 bar (80 psi);

7.6 bar (110 psi);

11.0 bar (160 psi);

Note: Tall cap option required for 11.0 bar (160 psi) spring.

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

4.520.1

PERFORMANCE (Cartridge Only)

3.4/50

2.8/40

15.1

30.2

45.4

FLOW lpm/gpm

PRESSURE DROP bar/psi

60.6

75.8

➀ to ➁ or ➁ to ➀ (fully open)

32 cSt/150 ssu oil at 40°C

1.4/20

2.1/30

0.7/10

HYDRAFORCE

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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

DIMENSIONS

MATERIALS

TO ORDER

EV10-S34

4.520.2

EV10-S34__ - __ __ __ - __ - __ __

Bias Spring

10 0.7 bar (10 psi)

40 2.8 bar (40 psi)

80 5.52 bar (80 psi)

110 7.6 bar (110 psi)

‡

160 11.0 bar (160 psi)

‡

230 15.9 bar (230 psi)

Porting

Cartridge Only 0

SAE 8* 8T

SAE 10* 10T

SAE 12* 12T

*SAE 6 vent port

Option

None

(Blank)

Tall Cap T

Seals

N Buna N (Std.)

V Fluorocarbon

P Polyurethane

(for pressures over

240 bar [3500 psi])

‡ T Option required

HYDRAFORCE

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Blue rectangles are links to other catalog pages.