Introduction To Fluorine-lined Valve Equipment

Polytetrafluoroethylene, commonly known as the "King of Plastics", was first developed by DUPONT CO., LTD in the United States in 1938 and industrialized in 1949. From the perspective of industrial application, it has a history of 50 years, but it has not been widely used in the valve industry for a long time.

Lined Valve is a lining process for all places in the valve body that can be reached by the medium. The lining material is generally made of fluoroplastics such as FEP (F46) and PCTFE (F3). It can be used for pipelines of various concentrations of sulfuric acid, hydrochloric acid, hydrofluoric acid, aqua regia and various organic acids, strong acids, strong oxidants and other corrosive media. However, fluorine-lined valves are greatly limited by temperature (only suitable for media between -50℃ and 150℃). Valves that can be made of fluorine-lined plastics include: fluorine-lined butterfly valves, fluorine-lined ball valves, fluorine-lined stop valves, fluorine-lined diaphragm valves, fluorine-lined gate valves, fluorine-lined plug valves, etc.