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Direct Acting, Poppet Type, Metric Cartridge – RPL10121

Direct Acting, Poppet Type, Metric Cartridge RPL10121

The pilot-to-open check valve RPL10121 is a direct-acting, spring-loaded poppet valve with drain port at port 3 and pilot line at port 4 (external).

When there is no flow through the valve, the spring holds the poppet in the closed position. The valve allows flow from port 2 to port 1. In the opposite direction, the pressure of the poppet onto the seat blocks the flow. If there is a sufficiently high control pressure introduction at port 4, it will lift the poppet from the valve seat. Then, oil will flow from 1 to 2. In this case, pressurisation should not happen at port 3.

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


  • Main application is to prevent uncontrolled movement or creeping of loaded cylinders and also to shut-off sections of the system
  • External surfaces zinc-plated and corrosion-proof
  • Hardened and ground internal valve components to ensure minimal wear and extended service life
  • Consumer holds in position leak-free
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