fluorine lining gate valve

Fluorine-lined ball valve has excellent chemical stability

by:Lianke Valve     2022-08-26
Fluorine-lined ball valve has excellent chemical stability, high heat resistance, cold resistance, low friction coefficient, and is an excellent self-lubricating material, but has low mechanical properties, poor fluidity and large thermal expansion. The demand for fluorine-lined ball valves continues to grow. A modern petrochemical plant needs thousands of valves of various types; a modern residential building also needs thousands of valves; the required quantity of fluorine-lined ball valves for an ordinary oil depot is less Hundreds or thousands. The fluorine-lined ball valve cannot be used under high pressure. Under the action of high pressure, the atoms of the two sealing surfaces are easy to penetrate each other and cause adhesion; The higher the situation, the more likely it will happen. If the fluorine-lined ball valve is bumped or squeezed during the closing process, the sealing surface will be partially worn or indented. In the oil depot, the fluorine-lined ball valve is a kind of supporting mechanical product with a large amount and frequent opening and closing. However, due to improper use and maintenance, the phenomenon of 'running and dripping' often occurs. As a result, fires, explosions, poisoning accidents, or oil deterioration, energy waste, equipment corrosion, and environmental pollution are caused. The accident has educated people that they hope to obtain high-quality fluorine-lined ball valves, and at the same time, it is also required to improve the use and maintenance level of fluorine-lined ball valves. This puts forward new and higher strict requirements for personnel engaged in the operation, maintenance, and engineering and technical personnel of fluorine-lined ball valves. In addition to careful design, reasonable selection, and correct operation of the fluorine-lined ball valve, it is also necessary to maintain and repair the fluorine-lined ball valve in time to reduce the phenomenon of 'running and dripping' of the fluorine-lined ball valve to a minimum. Due to the mechanical damage of the fluorine-lined ball valve, the sealing surface will be scratched, bumped, crushed and other damages during the switching process. Between the two sealing surfaces, under the action of high pressure, the mutual penetration and exudation of atoms occurs, resulting in the phenomenon of adhesion. When the two sealing surfaces move to each other, the adhesion is easily pulled and torn. The higher the roughness of the sealing surface, the easier this phenomenon occurs. During the closing process of the explosion-proof fluorine-lined ball valve, the ball center will bump and squeeze the sealing surface during the process of returning to the seat, so that the sealing surface is partially worn or indented. The fluorine-lined ball valve is not only simple in structure and good in sealing performance, but also small in volume, light in weight, low in material consumption, small in installation size, small in driving torque, easy to operate, and easy to open and close quickly within a certain nominal diameter range. It is one of the valve varieties that has developed rapidly in the past ten years. The fluorine-lined ball valve is evolved from the plug valve. Its opening and closing parts are used as a sphere, and the sphere is rotated 90° around the axis of the valve stem to achieve the purpose of opening and closing. The fluorine-lined ball valve is mainly used to cut off, distribute and change the flow direction of the medium on the pipeline. The ball valve designed with a V-shaped opening also has a good flow adjustment function. Fluorine-lined ball valve is professionally designed to control the opening and closing of various strong corrosive media. It is widely used in petroleum, chemical, dyeing, pesticide, acid and alkali production and other industries. It is the ideal choice for anti-corrosion valves. Fluorine-lined ball valve A ball with a circular through hole is used as the opening and closing part, and the ball rotates around the center line of the valve body with the valve stem to realize the opening and closing of the valve. The special molding process is used to make the sealing surface dense and good. In addition, the combination of V-type PTFE packing makes the valve achieve zero leakage; the ball and the valve stem are cast as one, which eliminates the possibility of the valve stem being pushed out of the pressure-bearing parts due to pressure changes. It is basically guaranteed that the fluorine-lined ball valve has manual fluorine-lined ball valve, worm gear rotating fluorine-lined ball valve, pneumatic fluorine-lined ball valve, fluorine-lined ball valve, etc. according to the driving method. Safety in use; all-plastic lining technology is adopted, which is resistant to strong corrosion of the medium. The ball valve with fluoroplastic lining layer has extremely high chemical stability and is suitable for any strong corrosive chemical medium; the structure of the all-pass floating ball valve can close the leakage in the whole pressure range, and the fluorine-lined ball valve is convenient for the pipeline system to pass through Ball sweep line and line maintenance.
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