These valves are used to control the actuator movements and block in one direction. In order to have the descent of a load under control and avoid the load’s weight being carried away the valve will prevent any cavitation of the actuator. Type “A” is different to type “B” in the position of the connections. Type “CC” is not sensitive to back pressure and allows the system pressure to move multiple actuators in series. The CETOP 5 interface guarantees maximum safety, minimal leakage and a very compact installation.