Fluorine-lined valves are a special type of valve whose internal components (such as valve body, valve cover, valve seat, valve disc, etc.) are lined with fluoroplastic materials to provide excellent corrosion resistance. What are the material selection and working principle of fluorine-lined valves?

Material selection of fluorine-lined valves
The lining material of fluorine-lined valves is usually polytetrafluoroethylene (PTFE) because it has good chemical corrosion resistance and non-sticky properties and can resist the erosion of most chemicals.
In some cases, other fluoroplastic materials such as polyvinylidene fluoride (PVDF) may be used. The appropriate lining material is selected according to the working medium.

Working principle of Sanitary Valve
The working principle of fluorine-lined valves is the same as that of ordinary valves. Depending on the type (such as ball valve, gate valve, stop valve, etc.), its opening and closing action controls the flow of fluid by rotating the valve stem or lifting the valve disc.

Fluorine-lined valves are mainly used for fluid control with highly corrosive media, such as acids, alkalis, salt solutions, etc.