... /PE80 valve 3.SDR9 to SDR11 4.For gas supply PE ball valve1.pe80/pe100 fitting,gas pipe fittings, ball valve2 ... .plastic pipe fitting,HDPE/MDPE3.PE coupler,tee,elbow,reducer,cap end,stub end,etc.4 ... /SDR13.6/SDR17/SDR21/SDR26for more detail,please contact me. pe ball valve(with a single)