... leakage,long lifetime,heat-resistant,corrosion resistance,well seal performance knife gate valveWith GS,CE certificate Non-toxic,environmental-friendly material ... codition. The picturs below designed before are served as reference. knife gate valve type features:1, seal by structural ceramics, ... C5, C12, CF8, CF8M, CF3, CF3M, CF8C, CN7M,etc.2. Knife: SS304 / 304L/ SS316/ 316L /WCB / LCB / WC9 and so ...