It adopts slide spool structure. By shifting the spool position, the internal oil passage is switched, changing the direction of hydraulic oil flow, so as to realize forward, reverse and stop actions of hydraulic cylinder or hydraulic motor. It supports manual or solenoid pilot operation, with built-in spring reset function to keep the spool in neutral position when no control signal is applied.

Certification: CE

Valve body, control spool, reset spring, sealing ring, end cover and control drive assembly. Common faults: spool stuck, internal leakage, external oil leakage, slow response and spring fatigue.