Middle Line Wafer Butterfly Valve 2"~48" PN10/16(150lbs) CI,DI, ... ,Brass materials ISO, API, ASTM, ANSI, DIN, BS, JIS Middle Line Wafer Type Butterfly Valvesize:50-1200mm150LBS/bar/PSIhandle/lever/gear ... various media, such as fresh water, sea water , sewage, vapor, food, medicine, acids, salt, alkalis, etc.3) Materials: Part name Materialsbodycast ...