Sanitary Butterfly Valve Working Principle

◇The design of the metal sealing valve adopts the principle of three-eccentric structure, which utilizes the inherent cam effect and completely eliminates all friction between the valve seat and the sealing ring in the 90-degree stroke. The design of the rubber soft sealing butterfly valve adopts a single eccentric structure. Unlike the centerline soft seal, the valve seat and the sealing ring are quickly separated after the butterfly plate rotates about 20 degrees, thereby reducing friction. The butterfly plate of the 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.

Flange butterfly valve structure

◇Vertical plate structure, the valve stem is an integral metal hard sealing valve. The sealing ring is a composite structure of flexible graphite plate and stainless steel plate, which is installed on the valve body, and the sealing surface of the butterfly plate is welded with stainless steel. The sealing ring of the soft sealing valve is made of nitrile rubber and is installed on the butterfly plate. The valve body and valve seat are welded with stainless steel.