The main components of the grooved butterfly valve material

Grooved butterfly valve Main components Material No. Name GB Standard 1 Body ductile iron QT450-10 2 Valve plate ductile iron QT450-10 3 Rubber EPDM 4 Upper shaft stainless steel 1Cr13 5 Lower shaft stainless steel 1Cr13 6 O-ring Nitrile 7 Positioning toothed disk Carbon Steel 45 # 8 handle Masteel 9 wire plug carbon steel 45 #