Pressure-reducing valve Size: 1/2" - 1'' Spec. 1).Material: brass cw614n, cuzn39pb3, cw617n, cuzn40pb2, dzr¡. 2).Technology: forging, plating, polishing 3).Connection: male and female, coupling, union 4).Size: 12*16, 16*20, 20*25, 26*32, ......, 51*63. 5).Used for gas, water supply systems, drinking water.. 1/2''-2''