Ceramic plug valve can also be called wear-resistant type plug valve, it is a metal valve inside the body cavity and metal gate surface lined with a layer of ceramic, it has a wear-resistant, high temperature and other advantages, mainly used in containing powder-like particles and pulp in the environment, currently this plug valve is mainly used in electricity, paper making, coal mine mining and other areas, large diameter can reach DN1200, can be used manual ceramic plug valve and electric ceramic plug valve and pneumatic ceramic plug valve three kinds.