How a Pilot Check Valve Works to Hold a Load on a Hydraulic Ram

Pilot Check Valves are widely used for stabiliser legs and leveling of mobile plant, Cranes, MHydraulic Ram or Cylinder does not drop or move if hydraulic power is lost or a hydraulic hose or fitting comes loose or fails.

Pilot Check valves are a mandatory safety item for many hydraulic applications. Dual Pilot operated check valves (also referred to as P.O. check valves), are check valves which can only be opened by an external pilot pressure signal.

Thus, P.O.checks, block flow in one direction, like standard check valves, but can be released once adequate pilot pressure is applied.

To Pass many Safety inspections Pilot Check Valves need to be hard plumbed into a cylinder. That is they can not be connected to a cylinder with hoses but must be connected with more durable, stronger and longer life Steel pipe work and solid adaptors.

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