Series U5B-Z3 High Performance Water Pressure Reducing Valves are used in commercial, industrial, and residential applications to reduce incoming water pressure for protection of plumbing system components and to reduce water consumption. It consists of a bronze body construction, integral stainless steel strainer replaceable seat module and optional thermal expansion bypass. Available with threaded, solder or quick-connect end connections. Maximum Working Pressure: 300psi (21 bar), Adjustable Reduced Pressure Range: 25 to 75psi (172 to 517 kPa), Standard Pressure Setting: 50psi (345 kPa).