How to quickly judge the failure of the check valve and how to deal with it

Common faults and treatment methods Common faults are: ① valve disc is broken; ② medium backflow. The reason that the valve disc is broken is: the pressure of the medium before and after the check valve is in a state of close to balance and mutual 'saw', the valve disc often beats with the valve seat, and some brittle materials (such as cast iron, brass, etc.) are made of The valve disc is broken. The preventive method is to use a check valve with a disc as a ductile material. The reasons for the backflow of the medium are: ① the sealing surface is damaged; ② the impurities are trapped. By repairing the sealing surface and cleaning impurities, backflow can be prevented. The function and characteristics of the double-swing check valve is to prevent the backflow of the medium in the pipeline. The check valve belongs to the automatic valve category, and the opening and closing parts are opened or closed by the force of the flowing medium. The check valve is only used on the pipeline where the medium flows in one direction to prevent the backflow of the medium to prevent accidents. The American standard check valve produced by our company is designed and manufactured according to ANSI B16.34 standard. Varieties: swing check valve, lift check valve, lift vertical check valve; Class150lB～900Lb; NPS 1'～28' working temperature -40～570℃; valve body material: WCB, WC1, WC6, WC9, C5, CF3, CF8, CF3M, CF8M, etc. Swing check valve suitable medium: water, steam, oil, nitric acid, strong oxidizing medium and urea, etc. Widely used in power station, petroleum, chemical, pharmaceutical, food and other industries. It can be used directly with imported equipment. Wafer check valve is suitable for various pipelines with nominal pressure PN1.0MPa～42.0MPa, Class150～2500; nominal diameter DN12～1200mm, NPS1/2～48; working temperature -196～540℃. Medium backflow. By choosing different materials, it can be applied to various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing medium and urea.
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Lianke Valve Co.,Ltd. has developed a unique technology with many applications including types of industrial valves.
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valve application offers the opportunity for improved manufacturing and product’s data collection, as well as direct feedback, enabling companies to better understand their consumer base and respond accordingly.