Pilot Operated Check Valves
Single pilot operated check valves are used to block a cylinder or an actuator, preventing the flow in the opposite direction until pilot pressure is applied. Dual pilot operated check valves are used to block a cylinder or actuator in both directions, until pressure is sent in one of the lines, activating the internal pilot that unlocks the opposite line allowing movement.
When the pilot line is without pressure, they are normal check valves.
- Single and double acting valves
- Internal and external pilot operated