The structure characteristics and principle of flange three eccentric multi-level hard seal butterfly valve

1 flange three eccentric hard-seal butterfly valve multi-level product can be applied in the petrochemical industry, food, pharmaceutical, textile, paper, electricity, sewage treatment, water supply and drainage and smelting and other industrial piping. Available in a variety of gases, liquid, semiliquid and micro-pmethodsicles powder pipelines or containers as the control media organizations to open and close the flow. Flange three eccentric multi-level hard-sealed butterfly valve can be installed in any position.
2 flange Butterfly Valves series, has a certain self-cleaning capacity, used in steel works, municipal pipelines, sewage pipes can show a variety of advantages, without maintenance, and good sealing performance, convenient operation.
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1 flange three eccentric multi-level hard-sealed  butterfly valve is the biggest difference with other: use three eccentric structure design. The design of the installation disc center and the center of rotation rigorous eccentricity. When the valve is opened at 10 ℃ and fully open, the sealing surface of the valve seat and valve disc is in a non-contact state, and closed the butterfly plate with the stem and the valve seat sealing surface deflection swing into the closed. The process for opening and closing of small, no wear and prolong the service life of the valve.
2 butterfly valve seat adopts embedded O rubber ring or fluorine plastic sealing pad and combined seals. Therefore, the temperature and wear self-compensation and other functions, to ensure that the valve is closed without leakage.
3 when the valve seat sealing pipeline fluid pressure incoming letter slot, because the Posson's component action principle, make joint seals in the pipeline pressure and O ring expansion force is generated, the valve seat sealing surface squeezed to the butterfly plate and the valve seal. Increasing this unique seal structure with the line pressure can produce greater sealing force.
4 the butterfly valve seat can fine tune. In the use of a certain number of years after the valve, when the sealing ring to wear appears leakage, can not open the valve in case, by the adjusting screw to seal to the butterfly plate direction tuning to press ring sizes needed, you can get the same compensation and sealing performance of the valve is the new.
5 flange three eccentric hard-seal butterfly valve multi-level series except with manual device, can be equipped with pneumatic or electronic device manual butterfly valve, pneumatic butterfly valve (can be attached to the feedback signal and equipped with electro-pneumatic valve positioner) and electric butterfly valve three kinds of six series products.