Double pilot operated check valves

Product description:
These double pilot operated check valves are used to extend or retract hydraulic cylinders or hold them in position. They are mainly used to lock rod and piston side of hydraulic cylinders.

Functional principle:
The hydraulic fluid flows from PA to A or from PB to B via the integrated check valves. The valves lock any unwanted reverse flow of the fluid. The integrated check valves unlock each other.

PA and PB: pressure ports
A and B: actuator ports