Material Of Wafer Lined Fluorine Butterfly Valve

The structure of Lined Butterfly Valve is relatively simple, generally consisting of four parts: valve body, valve seat, transmission mechanism and valve plate. Because it is used in various environments and working conditions, the materials used in manufacturing will also vary.
There are three types of materials generally used for valve bodies, namely cast iron, cast steel and stainless steel. In terms of performance, stainless steel is generally higher than cast steel and cast iron. Cast iron wafer-type fluorine-lined butterfly valves are generally used in pipelines with normal temperature and pressure and non-corrosive media, and the cost is relatively low. Stainless steel with better performance is generally used in pipelines with certain corrosive media, and the cost is also higher among the three materials.

The material of the wafer-type fluorine-lined butterfly valve plate is roughly similar to that of the valve body, but because the valve plate is inside the pipeline and is greatly eroded and corroded by the medium, the general performance requirements are higher than the material of the valve body. For example, if the valve body is cast iron, the valve plate must be cast steel; if the valve body is cast steel, the valve plate must be stainless steel.
The valve seat and valve stem are generally made of stainless steel.