Fluorine lined gate valve: a switch control device with strong corrosion resistance

    Fluorine lined gate valve It is a type of valve characterized by the lining of fluoroplastics on the parts in contact with the medium, such as the valve body, valve cover, gate, and valve stem, to improve its corrosion resistance. The opening and closing component of the fluorine lined gate valve is the gate plate, which moves perpendicular to the fluid direction and can only be fully opened or fully closed, without adjustment or throttling. Fluorine lined gate valves are suitable for corrosive media such as acids, alkalis, salts, and strong oxidants of various concentrations, but with a small temperature range (-50 ℃~150 ℃).
The working principle of fluorine lined gate valve is: when the handwheel rotates clockwise, the valve stem drives the gate to move downward, compresses the valve seat, and achieves closure; When the handwheel rotates counterclockwise, the valve stem drives the gate to move upward, leaving the valve seat and achieving opening. The structural characteristics of fluorine lined gate valves are: the inner wall of the valve body and the inner wall of the valve cover are lined as a whole, without gaps, to avoid medium leakage; There are sealing rings on both sides of the gate to ensure sealing performance; There is a packing seal between the valve stem and valve body to prevent medium leakage; There is a check washer between the handwheel and the valve stem to prevent the handwheel from loosening.

The advantages of fluorine lined gate valves are: good corrosion resistance and long-term use under harsh working conditions; Has good sealing performance and can effectively cut off fluids; It has a simple structure and operation, making it easy to maintain and replace. The disadvantage of fluorine lined gate valves is that they cannot be used for regulating or throttling fluids; Cannot be used for high or low temperature media; Cannot be used for media containing impurities such as particles or fibers.
The application scope of fluorine lined gate valves is widely used in pipeline systems in industries such as chemical, petroleum, metallurgy, pharmaceuticals, power, and papermaking, as switch control equipment. The selection requirements for fluorine lined gate valves are: choose appropriate specifications and models based on the properties, temperature, pressure, and other parameters of the medium; Select appropriate flange standards and sizes based on the connection method of the pipeline; Choose the appropriate driving method (manual, electric, pneumatic, etc.) based on the operating mode.