Direct Acting, Double Check Valve – RPDR 06/08/10

Direct Acting, Double Check Valve, RPDR 06/08/10

The pilot-to-open double check valve RPDR is inline mounted with two opposing, direct-acting, spring-loaded poppet valves.

In the normal position, the closing element is pressed onto the valve seat by the spring and pressure at port C or D, and blocks flow from C to A or from D to B leak free.
If a sufficiently high control pressure is introduced at port A or B, the control piston moves, lifting the closing element off the valve seat. The valve is opened and oil flows from D to B or from C to A.

See data-sheet for drawings, dimensions, model code, etc…


  • Main application is to prevent uncontrolled movement or creeping of loaded cylinders, to isolate sections of the system and to control double-acting cylinders
  • External surfaces zinc-plated and corrosion-proof
  • Hardened and ground internal valve components to ensure minimal wear and extended service life
  • Consumer is held in position with minimum leakage (A and B must be vented to T)
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