There are two kinds of turbobutterfly valves in the picture: wafer turbobutterfly valve and flange turbobutterfly valve. From the appearance, we can intuitively see the difference between the two.

From the specific working conditions, when selecting imported valves, try to use wafer butterfly valves, which are light in weight and easy to replace. However, the bolt length of clip-on butterfly valve is long and the construction accuracy is high. If the flanges on both sides are not aligned, the bolt will bear more pressure and the valve will easily leak. At high temperature, the bolt of the clamp butterfly valve may leak after expansion, so the clamp butterfly valve is not suitable for large diameter at high temperature.