... ,CF3M,CF8,CF8M,CN7M,CF8C,317LSpecial Alloy CE aproved 150lb ceramic knife gate valve Apply to such as ash, mud slag, coal ... as heavy medium piping system for coal preparation plantPneumatic 150lb ceramic knife gate valve features:1, seal by structural ceramics, can prevent ... , so it not easy to block ash and deposition. 3, The valve is sealed with high quality ceramic, and has high mechanical ...