The sealing principle and structural characteristics of flanged butterfly valves are the same as those of ordinary centerline butterfly valves.

Flange butterfly valve refers to a type of butterfly valve whose connection method is flange. This connection method is considered the most common one at present.

The butterfly plate of the flanged butterfly valve is installed in the diameter direction of the pipeline. The flanged butterfly valve is simple in structure, small in size and light in weight.

The opening and closing part of the flanged butterfly valve is a flange. The movement direction of the flange is perpendicular to the direction of the fluid. The flanged butterfly valve can only be fully opened and fully closed and cannot be adjusted or throttled.