Because the opening and closing distance of the butterfly valve is small when it is activated, the operation is simple and it is widely used in various industries. Due to the limitations of operating requirements, materials, sealing and other conditions, it is necessary to make a careful selection of its model when choosing a butterfly valve product. So what types of butterfly valves are available? How is its model divided?

   1. According to the structure:

  (1) Center sealing butterfly valve

  (2) Single eccentric sealing butterfly valve

  (3) Double eccentric sealing butterfly valve

  (4) Triple eccentric sealing butterfly valve

  2, according to the connection method:

   (1) Wafer butterfly valve

  The butterfly plate of the wafer butterfly valve is installed in the diameter direction of the pipeline. The valve is fully open.

  The wafer butterfly valve has simple structure, small size and light weight. The butterfly valve has two sealing types: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be inlaid on the valve body or attached to the periphery of the butterfly plate.

   (2) Flange butterfly valve

   The flange type butterfly valve is a vertical plate structure, and the valve stem is the sealing ring of an integral metal hard seal valve

   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.

  (3) Lug type butterfly valve.

  (4) Welded butterfly valve.