Wear-resistant valve is a product which is studied as a ash thermal power system resisting abrasion and short-life.Front and back flow,meeting-flow-surface and flashboard use alloy steel,cast basalt,structure ceramic as main materials.Feasures include hoist flexible,sealing performance,self-cleaning function of the gate slot fouling and long life so that it is more than ten times than general valve.With this festure,it is choosed by thermal power plants,mining as wear-resistant pipeline.