Flow Control Valves

EC50-43 — Pressure Compensator, Dynamic Load Sense, High Pressure
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EC50-43 Valve

EC50-43 Valve symbol


A screw-in, cartridge-style, high pressure, priority-on-demand, pressure-compensator with a
dynamic load sense, intended to provide priority flow in the required amount, while allowing
excess flow to be used for auxiliary functions.

With inlet at port 3, the EC50-43 will deliver required priority flow at 4, regardless of load
Excess flow exits at 2. Port 1 is the load sense port. All ports may be fully pressurized.

• Priority-on-demand.
• Dynamic load sense.
• Hardened parts for long life.
• Quiet, modulated response.
• Industry-common cavity.

Operating Pressure: Inlet: 345 bar (5000 psi) maximum
Input Flow Rate: 45.4 lpm (12 gpm) maximum
Maximum Regulated Flow: 34.1 lpm (9 gpm) with 10.3 bar (150 psi) compensator spring;
   26.5 lpm (7.0 gpm) with 5.5 bar (80 psi) compensator spring
Flow Maintenance: See performance chart
Temperature: -54° to 107°C (-65°F to 225°F) with polyurethane or 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: VC10-4; See page 9.110.1_4w
Cavity Tool: CT10-4xxx; See page 8.600.1
Seal Kit: SK10-4X-MMM for polyurethane seals, SK10-4U-000 for urethane seals; See page 8.650.1




EC50-43 Flow vs. Pressure



EC50-43 Valve Dimensions



Cartridge: Weight: 0.17 kg (0.37 lb);
Steel with hardened work surfaces.
Zinc-plated exposed surfaces; Buna N
O-rings and polyester elastomer back-ups standard.

Standard Ported Body:
Weight: 0.68 kg
(1.51 lb) Ductile Iron (code "D") standard,
consult factory for weight, dimensions may
differ. Rated to 345 bar (5000 psi).
See page 8.010.1_4w



EC50-43 Ordering