... DN50-DN1200 2.PN1.0/1.6MPa(150/200PSI) 3.API,ASTM,ASME,BS,EN,JIS,ISO approved 4.manual,electric ... ,pneumatic operated. Wafer Type Butterfly Valve with Lever actuatorFeatures:1. Small ... Alkalis, etc.Operating mode manual, worm gear, pneumatic, electric, etc. Standard: Design & ManufactureFlange ConnectionFace to Face ... Manual Operated Wafer Type Butterfly Valve