... ,CF8M,CN7M,CF8C,317LSpecial Alloy CE aproved 150lb ceramic knife gate valve Apply to such as ash, mud slag, coal slurry, ... medium piping system for coal preparation plantPneumatic 150lb ceramic knife gate valve features:1, seal by structural ceramics, can prevent solid grain ... ANSI , DIN, AS, ISO, JIS,SANS etc Material cast iron, ductile iron, cast steel, stainless steel ( 304/CF8, 316/CF8M, 304L/CF3 ...