fluorine lining gate valve

The advantages of fluorine-lined ball valve compared with traditional valve in chemical industry

by:Lianke Valve     2022-05-26
The advantages of fluorine-lined ball valves compared with traditional valves in the chemical industry: 1. Our unit uses a large number of fluorine-lined valves, which are more reliable in corrosion resistance than 316L and other valves. The main disadvantage is that we mainly use them at low temperature. Due to the low temperature of the medium, the surface will condense, causing the shell of carbon steel to rust, especially the valve, packing gland and bolts are easily corroded, resulting in leakage of materials from the valve stem packing and damage to the valve. 2. According to our experience, fluorine-lined valves have no other advantages except the typical advantages of anti-corrosion. Of course, there are many disadvantages: it cannot be well sealed, even high vacuum; the temperature is severely limited, if the temperature of the reactor is high, there will be swelling consequences. 3. The main advantage of the valve lined with PTFE is corrosion resistance, acid and alkali can be used, but too high temperature will not work. The phenomenon of running and dripping is the material or quality of the valve itself. 4. There is a corrosion-resistant and aging-resistant polyperfluoroethylene propylene (F46), so it has reliable corrosion resistance and sealing performance. It is widely used in chemical, petroleum, metallurgy, pharmaceutical and other industrial sectors to realize the adjustment or cutting of strong corrosive media such as acid and alkali in the production process, and has the most obvious effect in the control of water treatment process. 5. I have done experiments, and domestic fluorine-lined valves will leak inside, but they are not as good as ordinary valves. Therefore, fluorine-lined valves will not solve the problem of dripping and leakage, and are mainly used for corrosion resistance. 6. Compared with corrosion-resistant metal materials, the price is much cheaper. Fluorine-lined valves generally have temperature limits
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