The purpose and working principle of Double Eccentric Butterfly Valve

Classification: Double Eccentric Butterfly Valve

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Apr 01,2021

Double Eccentric Butterfly Valve is also called high-performance butterfly valve. It is mainly used for drainage of water plants, power plants, steel smelting, chemical industry, water source engineering, environmental facility construction, etc., especially suitable for water pipelines, as regulation and interception equipment. . Compared with the centerline butterfly valve, the Double Eccentric Butterfly Valve is more resistant to high pressure, has a longer life and good stability.

customized Double Eccentric Butterfly Valve supplier(s) china
Compared with other valves, Double Eccentric Butterfly Valve has a larger diameter and a lighter material, resulting in a lower cost. But because there is a butterfly plate in the middle, the flow resistance is large, so a butterfly valve smaller than DN200 is meaningless.
Working principle: Double Eccentric Butterfly Valve is further improved on the basis of single eccentric butterfly valve. Its structural feature is that the axis of the valve stem deviates from the center of the butterfly plate and the center of the body. The double eccentric effect enables the butterfly plate to be released from the valve seat immediately after the valve is opened, which greatly eliminates unnecessary excessive extrusion and scratching of the butterfly plate and the valve seat, reduces the opening resistance, reduces wear and improves The life of the valve seat is improved. The scraping is greatly reduced, and at the same time, the butterfly valve can also use a metal seat, which improves the application of the butterfly valve in the high temperature field.

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