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Check Valves DERV



Series DERV pilot-operated check valves lock a cylinder in any rest position. 
They are intended for direct mounting in the cylinder.


  •    -  pilot-operated check function and pipe-rupture protection in one valve
  •    -  optimized hydraulic pilot stage gives gentle opening
  •    -  leak-free valve seats; hardened, ground and lapped
  •    -  load pressure acts in the closing direction

Technical Data

 type   picture   nominal flow rate l/min   operating P dynamic bar   operating pressure static bar  area ratio data sheets
DERV 8   70 350 500 1:18 DERV-8_300-P-9050061
DERV 10 100 350 500 1:18 DERV-10_300-P-9050112

Double p.o. check valve



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