... switching valves,such as heavy medium piping system for coal preparation plantPneumatic 150lb ceramic knife gate valve features:1, seal by structural ceramics ... , so it not easy to block ash and deposition. 3, The valve is sealed with high quality ceramic, and has high mechanical ... SP-81,MSS SP-61,API598; ISO5208 Material for main parts of 150lb ceramic knife gate valve1. Body: WCB, WCC, LCB, LCC, WC6 ...