Concentric Butterfly Valve Structural Feature
The structural of the DBV concentric butterfly valve is that the shaft center of the valve stem, the center of the disc and the center of the body are in the same position. The structure is simple and the manufacture is convenient. Common rubber-lined butterfly valves belong to this category. The disadvantage is that the butterfly plate and the valve seat are always squeezed and scraped, the resistance is large, and the wear is fast. In order to overcome extrusion, scratches and ensure sealing performance, the valve seat is basically made of elastic materials such as rubber or PTFE, but it is also limited by temperature due to the use of sealing materials, which is why traditionally people think that butterfly valves are not resistant to cause of high temperature.
1. Novel and reasonable design, unique structure, light weight, quick opening and closing.
2. Small operating torque, convenient operation, labor-saving and smart.
3. It can be installed in any position and easy to maintain.
4. The seals can be replaced, and the sealing performance is reliable and can achieve zero leakage of bidirectional sealing.