What Do The Model Letters Of Flanged Fluorine-lined Butterfly Valves Mean? What Are The Model Letters Of Flanged Fluorine-lined Butterfly Valves?

Lined Butterfly Valve is a regulating valve with a disc-shaped butterfly plate as the opening and closing part, which can be used as a switch valve to control the on-off and medium flow of the pipeline system. With the application and development of fluorine-lined technology in butterfly valve manufacturing, butterfly valves made of fluorine-lined materials have been widely used in many fields such as petroleum, chemical industry, metallurgy, etc., and it has good corrosion resistance.

The butterfly plate of the fluorine-lined butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°. When it rotates to 90°, the valve is fully open.

At present, fluorine-lined butterfly valves and rubber-lined butterfly valves, as a component used to realize the on-off and flow control of pipeline systems, have been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. In the known butterfly valve technology, the sealing form mostly adopts a sealing structure, and the sealing material is rubber, polytetrafluoroethylene, etc. Due to the limitations of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance. A relatively advanced butterfly valve is a three-eccentric metal hard seal butterfly valve. The valve body and valve seat are connected components, and the valve seat sealing surface layer is welded with heat-resistant and corrosion-resistant alloy materials. The multi-layer soft stacking seal ring is fixed on the valve plate. Compared with the traditional butterfly valve, this butterfly valve has the advantages of high temperature resistance, easy operation, no friction when opening and closing, and the seal is compensated as the torque of the transmission mechanism increases when closing, which improves the sealing performance of the butterfly valve and prolongs its service life. In addition, this type of valve should generally be installed horizontally in the pipeline.

Applicable temperature: -20℃~180℃

Applicable medium: corrosive media such as acidic fluids and alkaline fluids.