Metal Seal Plug Valve

Metal seal plug valves are shut-off valves that use metal sealing pairs. Their main function is to cut off or connect the medium in the pipeline. The plug is cylindrical or conical, and the sealing surface is ground or surfacing with hard alloy. The working principle of this valve is that through two steps of lifting and rotating, the plug rotates 90° around the axis to achieve opening and closing, and the metals are closely adhered to form a seal. The advantages lie in its resistance to high temperature and high pressure, wear and corrosion, reliable sealing, suitability for media containing particles, and convenient maintenance. It is mainly applied in industries such as petroleum, chemical engineering, and metallurgy, used in pipelines for steam, oil products, and media containing solid particles, for opening, closing or regulating purposes.