Introduction To Fluorine-lined Valves

Lined Valve, also known as fluoroplastic lined corrosion-resistant valve, is a valve that uses polytetrafluoroethylene resin (or processed profiles) to be molded (or inlaid) on the inner wall of a steel or iron valve pressure-bearing part (the same method is applicable to the lining of various pressure vessels and pipeline accessories) or the outer surface of the valve inner part, and uses its unique performance in resisting highly corrosive media to make various valves and pressure vessels.
Fluorine-lined valves are lined with lining technology for all places inside the valve body that can be reached by the medium. The lining materials are generally fluoroplastics such as FEP (F46) and PCTFE (F3). They can be used in pipelines with various concentrations of sulfuric acid, hydrochloric acid, hydrofluoric acid, aqua regia and various organic acids, strong acids in rotary pumps, 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 with fluoroplastic lined include: fluorine-lined butterfly valve, fluorine-lined ball valve, fluorine-lined stop valve, fluorine-lined diaphragm valve, fluorine-lined gate valve, fluorine-lined plug valve, etc.