Non-lubricated Plug Valve

Non-lubricated plug valves are a type of valve used to control the flow of media. They are plug valves that do not require the injection of sealing oil. The valve body and the plug are in direct contact for sealing, but they adopt special designs and materials to reduce or eliminate the friction between the various components of the valve. The working principle is that the plug rotates 90°around the axis to open and close, and the sealing is achieved by the grinding accuracy of the sealing surface or elastic materials. The advantages lie in its simple structure, convenient maintenance, prevention of oil seal contamination of the medium, high temperature resistance, resistance to impurities, and reliable sealing. It is applied in industries such as petroleum, chemical engineering, and natural gas, and is suitable for cutting off or regulating media such as water, steam, and oil products. It is especially suitable for working conditions where oil is prohibited or medium contamination needs to be avoided.