FLOW CONTROLS

EC12-30 Pressure Compensator

DESCRIPTION

A screw-in, cartridge-style pressure-compensating element, intended for use with a

remote ﬁ xed or variable oriﬁ ce to yield a two-port-type, pressure-compensated, ﬂ ow-

regulating hydraulic valve.

OPERATION

The EC12-30 maintains a constant ﬂ ow rate from ➁ regardless of load pressure

changes in the circuit downstream of

➁.

The cartridge maintains a constant differential pressure from circuit point P to port

➀ (see USASI Symbol), thereby regulating the hydraulic ﬂ ow rate between the two

points in the circuit.

FEATURES

• Hardened parts for long life.

• Quiet, modulated response.

• Industry common cavity.

RATINGS

Operating Pressure: 240 bar (3500 psi)

Regulated Flow Rate: 58 lpm (15 gpm) max.

Standard Compensator Bias Spring: 6.9 bar (100 psi) See note on Ordering Table.

Flow Maintenance: ±10% from 0.38 to 58 lpm (0.1 to 15 gpm) at pressures from

5.5 to 207 bar (80 to 3000 psi)

Temperature: -40 to 120°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: VC12-3; See page 9.112.1

Cavity Tool: CT12-3XX; See page 8.600.1

Seal Kit: SK12-3X-MM; See page 8.650.1

USASI: ISO:

SYMBOLS

PERFORMANCE

(Cartridge Only)

5.410.1

8.1/0.32

7.1/0.28

6.1/0.24

5.1/0.20

4.1/0.16

ORIFICE DIAMETER mm/inch

Output Flow vs. Orifice Dia.

with 100 psid Spring

32 cSt/150 ssu oil at 40°C

18.9

FLOW lpm/gpm

37.9

3.0/0.12

56.8

2.0/0.08

1.0/0.04

HYDRAFORCE

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Blue rectangles are links to other catalog pages.

Cartridge: Weight: 0.23 kg. (0.50 lbs.)

Steel with hardened work surfaces.

Zinc-plated exposed surfaces.

Buna N O-rings and polyester

elastomer back-ups standard.

Standard Ported Body: Weight:

1.13 kg. (2.5 lbs.) Anodized high-

strength 6061 T6 aluminum alloy,

rated to 207 bar (3000 psi). Ductile

iron bodies available; dimensions

may differ. See page 8.012.1

DIMENSIONS

MATERIALS

TO ORDER

Porting

Cartridge Only 0

SAE 8 8T

SAE 10 10T

SAE 12 12T

1/2 in. BSP* 4B

3/4 in. BSP* 6B

*BSP Body; U.K. Mfr. Only

EC12-30

5.410.2

EC12-30 - __ __ __ - __ - __

Compensator Spring

100 6.9 bar (100 psid) standard

160 11.0 bar (160 psid)

Seals

N Buna N (Std.)

V Fluorocarbon

HYDRAFORCE

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Blue rectangles are links to other catalog pages.