... 54-58% 3.Thread type:ISO,DIN,BS,JIS,ANSI,GB 4.Thread spec.:G,R,NPT 5 ... .Size:20mm-75mm ppr ball valveFeature:1.Material:Brass(CuZn39Pb3/CuZn39Pb2/CuZn40Pb2, C38500 ... , no rust, anti-bacterial.3. Light weight, high strength and high impact strength.4. Convenient installation, reliable, recycled, ... Piping system for other industries and agriculture. High quality double-head PPR ball valve