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      Working principle of three eccentric all metal hard seal butterfly valve

      发布日期:[2020-01-07]     点击率:

      The working principle of three eccentric all metal hard seal butterfly valve, what is three eccentric?

      In a typical all metal hard seal butterfly valve, except that the stem and the valve plate have two eccentricities, the sealing surface of the valve plate and the valve seat is in the shape of an inclined round table.

      Sealing performance of all metal bi-directional pressure butterfly valve when the valve is closed, the valve plate is pushed forward due to eccentricity, and there is no friction between the valve plate and the valve seat during the closing process, and the valve plate is directly pressed on the valve seat, thus ensuring the service life of the valve;

      In addition, because the sealing ring of the valve (whether installed on the valve seat or valve plate) has certain elasticity, and there is a small amount of gap between the boss and the elastic ring in the elastic ring, which can make the elastic ring slightly displaced; when the valve is closed, the elastic ring can automatically move to the position with uniform stress under the action of the closing force; in addition, a small amount of deformation of the elastic ring makes the valve seat The sealing ring is evenly stressed to reach the sealing state.

      Three eccentric all metal hard seal butterfly valve is suitable for steam pipes of various pressures and temperatures, as well as steam condensate pipes of different pressures. From low pressure saturated steam of less than 1MPa to superheated steam of 10MPa; from process steam of petrochemical industry to medium and low pressure steam system of power plant, steam condensate recovery system, urban heating and steam supply system and other pipelines can be used.

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      Copyright ? 2015 Zhejiang Lange Valve Technology Co., Ltd All Rights Reserved.

      Address: Oubei Dongou Industrial Park, Yongjia County, Zhejiang Province

      Tel: 0577-67378122 67972858 Fax: 0577-67378155 67972856 website:www.trwwoodworks.com

      Main products: all metal hard seal butterfly valve, all metal two-way pressure butterfly valve

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