Cartridge Valves
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Note: Data may vary by configuration. See CONFIGURATION section.

Cavity 11A-3
Rated Flow 15.85 gpm 60 L/min
Maximum Operating Pressure 4000 psi 280 bar
Valve Hex Size 7/8 in. 22.22 mm
Valve Installation Torque 30 - 37 lbf-ft 40 - 50 Nm
Adjustment Screw Internal Hex Size 5/32 in. 4 mm
Locknut Hex Size 9/16 in. 14.27 mm
Locknut Torque 6 - 7 lbf-ft 9 - 10 Nm
Weight 0.44 lbs 0.2 kg
This is a pilot-to-open check valve. When pressure at port 2 exceeds the spring bias pressure, the poppet is pushed from its seat and allowed from port 2 to port 1. When sufficient pilot pressure is present at port 3, the pilot piston operates to push the poppet, flow is allowed from port 1 to port 2. Pilot pressure needed at port 3 to open the valve is directly proportional to the load pressure at port 1. Pressure at port 2 affects pilot-to-open pressure on a 1:1 ratio.Hardening processes and precision machining for long life and low leakage.

  • This valve can prevent the drifting of loads and securely locks pressurized loads, also provides protection to a pipe rupture or hose break.
  • Internal components are made of highquality materials, processed heat treatment and precision grinding to achieve excellent wear resistance and protection against contamination for long-lasting durability.
  • Virtually leak-free. If the valve causes the load to drift, the seat may be damaged by contamination. Please replace the valve immediately.
  • Pilot-to-open check valves are not intended to be used as motion control valves. If motion control is required in a circuit, please choose counterbalance valves.
  • Industry common cavity.
  • This valve is suitable for mounting in regenerative circuits or for controlling motors or cylinders.
  • Available bias springs for back pressure applications flexibility.
  • Consider using a check valve instead of a counterbalance valve if overrunning loads or controlled release speed are not critical in the application.
  • Based on the same flow rate, installation position, flow path, and cavity, three-port pilot-to-open check valves and three-port counterbalance valves are interchangeable. However, please note that there are functional differences and variations in external dimensions between them.
  • Winner guarantees that all products performance a 100% functional test before shipment.