... CF8C,317LSpecial Alloy CE aproved 150lb ceramic knife gate valve Apply to such as ash, mud slag, ... system for coal preparation plantPneumatic 150lb ceramic knife gate valve features:1, seal by structural ceramics, can ... to block ash and deposition. 3, The valve is sealed with high quality ceramic, and has high ... / 316/ Cr13% and so on4. Sealing face: soft seal such as Ceramic ,rubber,PTFE and Metal seal ...