... Wafer Butterfly Valve 2"~48" PN10/16(150lbs) CI,DI,SS,CS,ALB,Brass materials ISO, API, ASTM, ANSI, DIN, BS, JIS Middle Line Wafer ... *C2) Applicable medium: suitable for various media, such as fresh water, sea water , sewage, vapor, food, medicine, acids, salt, alkalis, etc.3 ... FaceTest&CheckStandardMSS SP-67, API609, EN593 DIN PN10/16/25, ANSI B16.1, BS4504, ISO PN10/16, JIS B2212/2213, BS 10 Table D ...