... certificate Non-toxic,environmental-friendly material Customized design offered High quality,reasonable priceOur production process are made under ISO9001,CE ... medium piping system for coal preparation plantPneumatic 150lb ceramic knife gate valve features:1, seal by structural ceramics, ... -61,API598; ISO5208 Material for main parts of 150lb ceramic knife gate valve1. Body: WCB, WCC, LCB, LCC, WC6, ...