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Direct Acting, Poppet Type, Metric Cartridge – RP10121

Direct Acting, Poppet Type, Metric Cartridge RP10121

The pilot-to-open check valve RP10121 is a direct-acting, spring-loaded poppet valve.

There is free flow from port 2 to port 1. In the opposite direction, the pressure of the poppet onto the seat blocks the flow. If a sufficiently high control pressure builds at port 3, it will lift the poppet from the valve seat. Then, oil will flow from 1 to 2. The necessary pilot pressure at port 3 is dependent on the pressure across port 1 and 2.

See datasheet for drawings, dimensions, model code, etc…


  • Main application is to prevent uncontrolled movement or creeping of loaded cylinders and also to isolate sections of the system
  • External surfaces zinc-plated and corrosion proof
  • Hardened and ground internal valve components to ensure minimal wear and to extend service life
  • Low pressure drop due to CFD optimized flow path
  • Consumer is held in position with minimum leakage
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