NAPRVGT250-65 Dixon Cast Brass Factory Set Pressure Reducing Standard Globe Valve - 2-1/2" Grooved Inlet x 2-1/2" Grooved Outlet - Calculated Setting: 65Features: 1 1 2" size reduces inlet pressure of 300 PSI (2069 kPa) or less to working pressures of 10 through 175 PSI (69 1207 kPa). 2 1 2" size reduces inlet pressures of 400 PSI (2758 kPa) or less to desired working pressures from 20 through 175 PSI (138 1207 kPa) under discharge or static conditions. Tamper resistant. Specifications: UL listed for Automatic Sprinkler Systems as floor or zone control valve Standpipe Systems, Class I, II and III