Pressure Reducing Valve series SDDRA
zawór redukcyjny płytowy SDDRA
3-way Pressure Reducing Valves

Pressure Reducing Valve series SDDRA

Pressure [bar]


Flow rate [l/min]


Pressure Reducing Valve series SDDRA are high performance, manually adjusted 3-way pressure-reducing valves. The main components of the valves are a sandwich body (stack-mounting body) and the screw-in cartridge (type DDRA-7L…-10…). The pressure reducing cartridges are direct acting and de signed on the sliding spool principle. Two models are avai lable, one with the function in P and the other with the func tion A and an integral bypass check valve. These valves re duce the pressure in the secondary side of P or A (for flow IN) respectively to the value set at the pressure adjustment. The 3-way pressure-reducing cartridges function as fullflow pressure-relief valves from port P → T or A → T respec tively as soon as the reduced pressure rises above the valve pressure setting. A pressure-gauge port M (G1/4”) is also provided in the secondary circuit. These sandwich val ves are used to reduce the system pressure in mobile and industrial applications.

  • With cartridge valve, type DDRA-7L…-10…
  • Full-flow secondary pressure relief
  • Function in the P or A line
  • 5 pressure ranges available
  • With pressure-gauge port
  • Excellent stability over the whole pressure and flow range
  • External cartridge parts with zinc-nickel plating

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