... API,ASTM,ASME,BS,EN,JIS,ISO approved 4.manual,electric,pneumatic operated. Wafer Type Butterfly Valve with Lever ... , Vapor, Food, Medicine, Oils, Acids,Alkalis, etc.Operating mode manual, worm gear, pneumatic, electric, etc. Standard: Design & ManufactureFlange ConnectionFace ... Steel/Stainless Steel/Cast Iron(GGG25)/Ductile Iron/ Al-Bronze2DiscAl-Bronze/CF8M/Ductile iron/WCB3SeatEPDM/PEFE/Buna/NBR ...