A pressure reduction station (ZV SKID) is used to drop a high supply pressure down to the pressure used by the downstream installation. They operate on liquids, vapors and gases.
The pressure reduction valve is designed to be self-regulating, which means it adjusts the size of the opening through which the liquid, vapor or gas passes so that only enough to cause the necessary downstream pressure is permitted past. The valves work by balancing one force against another. When one force is larger than the other the valve stem moves in the opposite direction.
Two main groups of pressure control valves are available for either pressure reduction or back pressure applications: