... ,JIS,ISO approved 4.manual,electric,pneumatic operated. Wafer Type Butterfly Valve with Lever actuatorFeatures:1. ... and compact construction, quick 90 degree on-off operation.3. Minimized operating torque, energy saving ... Food, Medicine, Oils, Acids,Alkalis, etc.Operating mode manual, worm gear, pneumatic, electric, etc. Standard: Design ... catalogue as below: Manual Operated Wafer Type Butterfly Valve