FA49H explosion-proof wave valve is a water safety valve that can block water hammer and eliminate destructive water hammer. Usually installed in the front of the engineering pipeline, composed of a plurality of safety valves, and has a buffer spring structure, when the water hammer is formed but does not cause destructive ability, the buffer spring will dissolve the water hammer When the formed water hammer reaches enough to destroy the equipment behind it, the safety valve group acts when the water hammer is formed