Flow Control Valves

EC12-40 — Flow Regulator, Pressure Compensator
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EC12-40 Valve

SYMBOL:
EC12-40 Valve symbol

 

DESCRIPTION
A screw-in, cartridge-style, pressure-compensating element, intended for use with a remote fixed or
variable orifice to yield a three-port, bypass-type, pressure-compensated, flow regulating hydraulic valve.

OPERATION
The EC12-40 maintains a constant flow rate from 3 regardless of load pressure changes in the
circuit downstream of 3.
The cartridge maintains a constant differential pressure from circuit point P to port 3 (see valve symbol),
thereby regulating the hydraulic flow rate between the two points in the circuit. The EC12-40 is a priority
type regulator, delivering pump flow first to 3, then bypassing excess to 2. All ports may be fully pressurized.

FEATURES
• Hardened parts for long life.
• Quiet, modulated response.
• Cost-effective cavity.

RATINGS
Operating Pressure: 240 bar (3500 psi) maximum
Flow Rate: 80 lpm (21 gpm) max. regulated; 120 lpm (32 gpm) max. input; 68 lpm (18 gpm) bypass
Standard Compensator Bias Spring: 6.9 bar (100 psid)
Flow Maintenance: 7.57 to 75.7 lpm (2 to 20 gpm) settings ±10%
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with Fluorocarbon 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: VC12-4; See page 9.112.1_4w
Cavity Tool: CT12-4xx; See page 8.600.1
Seal Kit: SK12-4x-MMM; See page 8.650.1



 

 

PERFORMANCE:

EC12-40 Flow vs. Pressure

 

DIMENSIONS:

EC12-40 Valve Dimensions

 

MATERIALS:

Cartridge: Weight: 0.28 kg (0.61 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-ups
standard.

Standard Ported Body: Weight: 1.5 kg
(3.3 lb); 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_4w

 

ORDERING CHART:

EC12-40 Ordering