... Clamp Butterfly Valve,Butterfly,high performance butterfly,fire fighting equipment Nominal Dia.DN50(2'')-DN200(8'') Clamp Butterfly ... Valve,Butterfly,high perfomance butterfly,fire fighting equipmentFeatures:1) Varieties: turbine signal butterfly valve, throw butterfly valve2) ... DN150(6"), DN200(8") 11) Rated working pressure: 1.6Mpa 12) Strength test pressure:3.2Mpa 13) Working ...