Double eccentric butterfly valve is mainly applied to water plants , power plants, steel smelting , chemical, water source engineering, environmental facilities and other drainage systems , especially for water pipe on the road, used as regulation and closure devices.

Double eccentric butterfly valve on the basis of a single eccentric butterfly on further improvements. The structure is characterized by both the stem axis deviation from the center of the disc , but also deviated from the center of the body . Effect of the valve double eccentric disc can be turned back from the seat quickly , substantially eliminating unnecessary over- pressing of the valve seat disc , scratch phenomenon , reducing the turn-on resistance of distance, reduce wear and improve the seat life . A significant reduction in scratching , but also makes the double eccentric butterfly valve metals may also be used to improve the high temperature valve application fields. But because of its position sealing structure sealing principle is that the sealing surface of the valve seat disc and is in line contact , deformation of the disc by pressing the sealing effect caused by the elastic valve seat , to a closed position so demanding ( especially metal seat ) , low bearing capacity , which is why people think the traditional valve products impatience pressure, leakage volume reasons.

⑤ Replace the valve plate seals , "O" -ring , disc , shaft and other materials, applicable for various medium and temperature.

 Keywords:butterfly valve ,knife gate valve,ball valve,globe valve,slurry gate valve