Check Valves DERV

Description

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

Advantages

  • 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 Nominal flow rate
l/min
Operating pressure, dynamic
bar
Operating pressure, static
bar
Area ratio
DERV 8 70 350 500 1:18
DERV 10 100 350 500 1:18

Models

Double p.o. check valve

Applications

  • Stabilizer cylinders on mobile equipment