Description 

It provides static and dynamic control of load by regulating  the flow IN and OUT of the actuator, through ports C1  and C2. This valve module includes 2 sections, each one  composed by a check and a relief valve pilot assisted by  pressure in the opposite line: the check section allows free  flow into the actuator, then holds the load against reverse  movement; with pilot pressure applied at the line across,  the pressure setting of the relief is reduced in proportion  to the stated ratio until opening and allowing controlled  reverse flow. Back-pressure at V1 or V2 is additive to the  pressure setting in all functions. For better safety and  compact assembly, the C1 and C2 ports are gasket mounted  directly on the actuator.