Nowadays, with the wide application of ceramics, the emergence of ceramic disc solves the problem of valve wear resistance. The ceramic disc is suitable for the dry ash system of the power plant and the feed pump of the warehouse pump. It can also be used for the opening and closing of various types of worn dry dust, water and other media in the mining, paper making and chemical industries. The ceramic feed valve is based on Armstrong valve technology and is sealed in any direction after closing. The ceramic disc is made of WCB steel castings and seamless steel pipe welding and packing with hard seals. Good sealing performance, strong wear resistance, small starting load, less ash and ashing, and long service life.