Transformer Special vacuum butterfly valve with SS 304

It can be divided into the following types according to the connection method: 1. Wafer type butterfly valve The butterfly plate of the clamp type butterfly valve is installed in the diameter direction of the pipeline. The valve is in a fully open state. The wafer type butterfly valve has a simple structure, small volume, and light weight. Butterfly valves have two types of sealing:

elastic sealing and metal sealing. Elastic sealing valve, the sealing ring can be embedded 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 an integral metal hard seal. The sealing ring of the valve is a composite structure of flexible graphite plate and stainless steel plate, which is installed on the valve body. The sealing surface of the butterfly plate is welded with stainless steel. Soft seal 3. Welded butterfly valve Welded butterfly valve is a non closed type butterfly valve widely used in fields such as building materials, metallurgy, mining, power, etc. The medium temperature is ≤ 300 ℃, the nominal pressure is 0.1Mpa, and it plays a role in connecting, opening, closing, or regulating