... 4.Thread spec.:G,R,NPT 5.Size:20mm-75mm ppr ball valveFeature:1.Material:Brass(CuZn39Pb3/CuZn39Pb2/CuZn40Pb2, C38500/C38000 ... , C3771/C3603 and so on) Cu%:50%-60% PPR(Yanshan Petrochimical, Korea Hyosung)2. Pressure Grade: 1.6MPa.3 ... system for other industries and agriculture. High quality double-head PPR ball valve