... to SDR11 4.For gas supply PE ball valve1.pe80/pe100 fitting,gas pipe fittings, ball valve2.plastic pipe fitting,HDPE/MDPE3 ... ,cap end,stub end,etc.4.GB/EN/ANSI/ASTM/ISO/ASNZS/DIN Standards5.dimension:DN20mm - DN630mm,1/4'' - 24''6 ... .6/SDR17/SDR21/SDR26for more detail,please contact me. pe ball valve(with a single)