The fluorine-lined discharge valve is easy to operate, free to open, flexible and reliable in movement, simple to assemble and maintain the valve disc, reasonable in sealing structure, and convenient and practical in replacing the sealing ring. Structure: It is mainly composed of valve body, sealing ring, valve disc, bracket, valve stem, handwheel, valve gland, nut, flange, positioning screw and other parts. This type of valve should generally be installed horizontally in the pipeline.