... 3.API,ASTM,ASME,BS,EN,JIS,ISO approved 4.manual,electric,pneumatic operated. Wafer Type Butterfly Valve with Lever actuatorFeatures ... Air, Vapor, Food, Medicine, Oils, Acids,Alkalis, etc.Operating mode manual, worm gear, pneumatic, electric, etc. Standard: Design & ManufactureFlange ConnectionFace to Face ... can find what you want from our catalogue as below: Manual Operated Wafer Type Butterfly Valve