Fluorine-lined Gate Valve: A Switch Control Device With Strong Corrosion Resistance

Lined Gate Valve is a valve, which is characterized by the valve body, valve cover, gate and valve stem and other parts in contact with the medium are lined with fluoroplastics to improve its corrosion resistance. The opening and closing parts of the fluorine-lined gate valve are gates, the movement direction of which is perpendicular to the direction of the fluid, and can only be fully opened or fully closed, and cannot be adjusted or throttled. Fluorine-lined gate valves are suitable for corrosive media such as acids, alkalis, salts and strong oxidants of various concentrations, but the temperature range is small (-50℃～150℃).
The working principle of the fluorine-lined gate valve is: when the handwheel rotates clockwise, the valve stem drives the gate to move downward, press the valve seat, and achieve closure; when the handwheel rotates counterclockwise, the valve stem drives the gate to move upward, leave the valve seat, and achieve opening. The structural features of the fluorine-lined gate valve are: the inner wall of the valve body and the inner wall of the valve cover are lined as a whole, without gaps to prevent 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 the 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 product advantages of the fluorine-lined gate valve are: it has good corrosion resistance and can be used for a long time under harsh working conditions; it has good sealing performance and can effectively cut off the fluid; it has a simple structure and operation, which is convenient for maintenance and replacement. The product disadvantages of the fluorine-lined gate valve are: it cannot be used to regulate or throttle fluids; it cannot be used for high temperature or low temperature media; it cannot be used for media containing impurities such as particles or fibers.
The application range of the fluorine-lined gate valve is: it is widely used in pipeline systems in chemical, petroleum, metallurgy, pharmaceuticals, electric power, papermaking and other industries as a switch control device. The selection requirements of fluorine-lined gate valves are: select appropriate specifications and models according to the properties, temperature, pressure and other parameters of the medium; select appropriate flange standards and sizes according to the connection method of the pipeline; select appropriate drive mode (manual, electric, pneumatic, etc.) according to the operation method.