This is a check valve (spring closing and cone on edge seals) with a built-in flow control feature. The mounting surface is according to the ISO 4401 standards.
Its use allows:
-prevention of flow one-way;
-flow in one-way, if opened by a pilot pressure;
-free flow in the other way.
The MVPP are always mounted under the ISO 4401-03 directional solenoid valves and can be assembled with all other ISO 4401-03 valves.