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Fluorinated lining valves are generally quite expensive. Moreover, these valves are typically used in two types of working environments: 1. Presence of toxic and harmful chemicals； 2. Highly corrosive acids, bases, and various organic solvents. Due to the harsh operating conditions, the following points must be taken into account when using fluorinated lining valves: 1. The valves must be used within the pressure, temperature, and medium range specified for fluorinated lining valves. 2. During use, fluorine-lined valves, due to their soft material composition, often experience damage to their fluoroplastic sealing surfaces as a result of medium crystallization or solid particles, which leads to sealing leaks. Once this is detected, the sealing elements should be repaired or replaced promptly. 3. Fluorinated-lined valves can generate excessive pipeline stress due to temperature changes during use; efforts should be made to minimize such temperature variations, and U-shaped expansion joints should be installed before and after the valve. 4. Gaskets are generally not used at the flange of fluorine-lined valves. If leakage occurs at the middle flange, the nuts of the middle flange can be tightened evenly to eliminate the leakage. If the middle flange sealing surface is damaged, it is necessary to repair the sealing surface and add a gasket for the middle flange to resolve the issue. 5. Some fluorinated-lined valves are used with a partially open position to regulate flow; high-speed media can cause premature damage to the sealing surfaces, and in such cases, the seals should be replaced promptly. 6. For fluorine-lined valves installed on pipelines carrying toxic, flammable, explosive, or highly corrosive media, it is strictly prohibited to replace the packing while the pipeline is under pressure. Although fluorine-lined valves are designed with an upper sealing function, it is not recommended to replace the packing while under pressure. 7. For pipelines containing flammable media, measures must be taken to ensure that both the ambient temperature and the operating temperature do not exceed the flash point of the medium, in order to prevent hazards caused by sunlight exposure or external fires. 8. Moreover, in the case of severe and prolonged vibration of the pipelines, measures must be taken to eliminate it, in order to prevent damage to the fluoroplastic-lined valves as a result. 9. It is prohibited to use levers to open and close fluorinated-lined valves. Pay attention to the indication positions and limit devices for opening and closing such valves; once they are in the correct position, do not apply additional force to close them, in order to prevent premature damage to the fluoroplastic sealing surfaces. 10. For some media that are unstable and prone to decomposition (for example, the decomposition of certain media can cause volume expansion, leading to abnormally high operating pressures), which may result in valve damage or leakage, measures should be taken to eliminate or limit the factors that cause the decomposition of such unstable media. 11. When selecting valves, it is necessary to take into account possible changes in operating conditions resulting from unstable and easily decomposable media, and therefore choose fluorinated-lined valves equipped with automatic pressure relief devices. Improper use will result in significant financial losses and serious consequences. Paying attention to the proper usage and maintenance of fluorinated lining valves can extend their service life, prevent various types of accidents, and ensure the normal operation of pipelines.