... , Vapor, Food, Medicine, Oils, Acids,Alkalis, etc.Operating mode manual, worm gear, pneumatic, electric, etc. Standard: Design & ManufactureFlange ConnectionFace to Face DimensionTest ... NameMaterial1BodyCarbon Steel/Stainless Steel/Cast Iron/Ductile Iron/ Al-Bronze2DiscAl-Bronze/CF8M/Ductile iron/WCB3SeatEPDM/PEFE/Buna/NBR/Hypalon4StemCarbon Steel/Stainless ...