Corrosion Resistance Of Fluorine-lined Valves

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Among the corrosion-resistant materials, Lined Valve has incomparable excellent performance. In addition to molten alkali metals, elemental fluorine and aromatic hydrocarbons, it reacts randomly in various concentrations of hydrochloric acid, sulfuric acid, nitric acid, aqua regia, organic acids, strong oxidants, alternating concentrated and diluted acids, alternating alkalis and various organic solvents. Lining the inner wall of the valve with polytetrafluoroethylene not only overcomes the disadvantages of low strength of polytetrafluoroethylene materials, but also solves the shortcomings of poor corrosion resistance and high cost of the main body of the valve. In addition, in addition to its excellent chemical stability, polytetrafluoroethylene has good anti-fouling and anti-sticking properties, extremely small and similar dynamic and static friction coefficients, and good anti-friction lubrication properties. It is used as a sealing pair for valve opening and closing parts to reduce the friction between the sealing surfaces, reduce the valve operating torque, and increase the service life of the product. Its scope of use can also be extended to the food and pharmaceutical industries.

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