ChinaPressureReducingValveManufacturs ISO228 HVAC Valve, DIN259 HVAC Valve, can be customized. DN15 brass water pressure regulating valve pressure reducing valve safety valve PPR valve water purifier system Pressure reducing valve or relief valve is a kind of safety valve, which is used to control or limit the pressure in the system; Otherwise, the pressure may increase and cause process chaos Working Pressure 16 bar (232 psi) Working Temperature from 0 鈩?120 鈩?(from 32鈩?248鈩? Thread ISO228 (equivalent to DIN259 and BS2779)ChinaPressureReducingValveManufacturs website:http://www.winsoems.com/brass-valve/pressure-reducing-valve/