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Pilot Check Valves

pilot check valves

Hydraulically pilot-operated check valves can, open requirement, open via an additional control oil connection in shut-off direction.

Therefore, they consist of a valve housing, a control piston for unlocking, a valve seat, a ball and a closing spring.

Furthermore, HYDAC pilot-to-open check valves are spring-loaded poppet valves. It allows the flow in one direction and blocks it in the opposite direction. By applying a sufficient pressure at third port the valves opens even in the opposite direction.

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