The double eccentric butterfly

The double eccentric butterfly valve is further improved on the basis of the 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 the double eccentric butterfly valve can also use metal seat, 

which improves the application of the butterfly valve in the high temperature field.