Valve corrosion refers to the destruction of metal materials by chemical or electrochemical reactions with their environment. How to isolate the metal from the surrounding environment or use non-metallic composite materials to control and prevent gradual corrosion of metal valves has become a common concern of people. Corrosion of metals has a considerable impact on the duration, reliability and service life of valves. During valve operation, the rubbing surfaces are worn and damaged as a result of the simultaneous mechanical action and chemical or electrochemical interaction of the metal with the environment. For valves, the climatic conditions of their pipelines are complex: the presence of hydrogen sulfide, carbon dioxide and…