High Performance Butterfly valve

Generally speaking, high performance butterfly valves are considered to be equivalent to double eccentric butterfly valves, but in fact, they are also different.

The valve stem axis deviates from both the butterfly plate center and the valve body center. This structure enables the butterfly plate to quickly separate from the valve seat when the valve is opened, reducing the opening resistance, reducing wear and tear, and extending the service life. Most double eccentric butterfly valves use line seals. The sealing ring is on the butterfly plate and fixed with a pressure ring, which has good sealing performance.

The high-performance butterfly valve is optimized on the basis of the double eccentric butterfly valve, with a more compact structure and stronger sealing performance. The valve seat is embedded in the valve body and uses high-quality sealing materials to ensure the sealing performance of the valve.

During the opening process, the axis of the valve stem deviates from the center of the butterfly plate, so that the upper and lower ends of the butterfly plate no longer become the axis of rotation, dispersing and reducing excessive extrusion between the upper and lower ends of the butterfly plate and the valve seat. As the valve closes, the gap between the butterfly plate and the valve seat gradually increases to achieve sealing.

During the closing process of the high-performance butterfly valve, a smooth sealing line is formed between the valve plate and the valve seat, achieving zero leakage.