A Pressure Reducing Valve is a control valve that reduces the input pressure of a fluid to a desired value at its output. Generally used for gases and liquids. Why Duplex Stainless Steel? Excellent corrosion resistance and increased strength, our Direct Acting Pressure Reducing Valve in Duplex Stainless Steel are popular in a variety of industries such as Offshore and near-shore operations, oil drilling, desalination, water treatment, chemical, marine and other industrial operations.Excellent corrosion resistance and increased strength. Suitable for Sea Water applications: Offshore and near-shore operations, oil drilling, desalination, water treatment, chemical, marine and other industrial operations Unique piston-diaphragm design outperforms traditional type by better ability of sustaining pressure and less leakage. The balanced piston design provides a constant outlet pressure even when the inlet pressure is unstable. The supplied pressure gauge indicates the outlet pressure.