Brass safety valve: Specification 1/2 inch, 3/4inch, 1inch, 1-1/2inch, ... Working pressure:1.6MPa Brass body stainless steel float ball valve series, use the material of Hpb59-1 copper, made by ... advantage of aesthetic appearance, corrosion resistance, flexible and light to open , good sealing performance, high compressive strength of the shell. Brass safety valve