fluorine lining gate valve

Precautions for the use of pneumatic fluorine-lined valves

by:Lianke Valve     2022-06-24
Precautions for the use of pneumatic fluorine-lined valves Pneumatic fluorine-lined valves are specially used to control corrosive or strong corrosive media. The surface of the valve body cavity is covered with various fluorine plastics, which have the characteristics of high strength and good corrosion resistance. The pneumatic fluorine-lined valve is used in conjunction with the actuator, and has dual functions of switch and flow adjustment, which can easily open and close the gas circuit without affecting the flow, ensuring the repeatability of the flow. It starts slowly, reducing the impact of instantaneous pipeline pressure on the instrument. Precautions for the use of pneumatic fluorine-lined valves: 1. Before use, read the product instruction manual carefully. 2. Use it within the range of pressure, temperature and medium specified on the nameplate or in the manual. 3. For some media that are unstable and easy to decompose (for example, the decomposition of some media will cause volume expansion and cause abnormal pressure increase in working conditions), which may cause valve damage or leakage, measures should be taken to eliminate or limit the factors that cause the decomposition of unstable media . When selecting the valve, the pneumatic fluorine-lined valve with an automatic pressure relief device should be selected in consideration of the possible changes in the working conditions caused by the unstable and easy decomposition of the medium. 4. For the fluorine-lined valve on the pipeline with toxic, flammable, explosive and strong corrosive medium, it is strictly forbidden to replace the packing under pressure. Although the fluorine-lined valve is designed to have an upper sealing function, it is not recommended to replace the packing under pressure. 5. During the use of the pneumatic fluorine-lined valve, the fluoroplastic sealing surface is often damaged due to the crystallization of the medium and solid particles due to its soft texture, resulting in seal leakage. After discovery, repair or replace the seal in time.
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