Introduction, use and classification of fluorine-lined valves


Introduction, use and classification of fluorine-lined valves

Introduction of fluorine-lined valve:
Fluorine-lined valve, also known as fluoroplastic lined corrosion-resistant valve, is a method of placing polytetrafluoroethylene resin (or profile processed) on the inner wall of steel or iron valve pressure-bearing parts (same method) by molding (or inlaying) method. It is suitable for the lining of various pressure vessels and pipeline accessories) or the outer surface of valve internals, and is made into various types of valves and pressure vessels by using its unique performance in resisting strong corrosive media.

The fluorine-lined valve adopts the lining process for all the places where the medium in the valve body can reach. The lining material is generally made of fluoroplastics such as FEP (F46) and PCTFE (F3), which can be applied to various concentrations of sulfuric acid, hydrochloric acid and hydrofluoric acid. , aqua regia and various organic acids, rotor pump strong acid, strong oxidant and other corrosive media pipelines, but the fluorine-lined valve is relatively limited by temperature (only applicable to the medium between -50℃~150℃) , The valves that can be lined with fluorine plastics are: fluorine-lined butterfly valve, fluorine-lined ball valve, fluorine-lined globe valve, fluorine-lined diaphragm valve, fluorine-lined gate valve, fluorine-lined plug valve, etc.

Fluorine-lined valve application:
With the rapid development of modern industry, fluorine-lined valves and their various pipeline accessories have been rapidly applied in various fields such as petroleum, printing and dyeing, and chemical industry. The design unit and the construction unit have paid great attention and favor, and it is a sunrise product with great market potential.

The fluorine-lined valve has dual functions of switching 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. A damper is quite added, which greatly increases the service life of the needle valve. Fluorine-lined valves are specially used to control corrosive or strong corrosive media. The surface of the valve body cavity is covered with various fluoroplastics, which are suitable for different working temperatures and fluid pipelines, and have the characteristics of high strength and good corrosion resistance.

Fluorine-lined valve classification:
Fluorine lined valves are divided into: pipe pinch valve, lined diaphragm valve, lined pneumatic butterfly valve, lined ball valve, lined check valve, lined fluorine globe valve, lined plug valve, lined wedge gate valve, diaphragm valve, butterfly valve, ball valve, swing type, Ball check valve, pneumatic rubber-lined, fluorine-lined plastic diaphragm valve (normally closed), DC rubber-lined diaphragm valve, packing type adjustable fluorine-lined plastic butterfly valve, fluorine-lined plastic globe valve, etc.

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