Middle Line Wafer Butterfly Valve 2"~48" PN10/16(150lbs) CI,DI,SS,CS,ALB, ... .Features:1) Working Temperature: -15~150*C2) Applicable medium: suitable for various media, such as fresh water, sea water , sewage, vapor ... , food, medicine, acids, salt, alkalis, etc.3) Materials: Part name Materialsbodycast iron, ductile iron, carbon steel, stainless steel, ALB ...