Flange three eccentric multi-level seal butterfly valve products can be applied to the petrochemical industry, food, medicine, textile, paper, electricity, sewage treatment, water supply and drainage and smelting and Other industrial pipelines. It can act as a control mechanism for opening and closing the medium in a variety of gas, liquid, semi-fluid and microparticle powder delivery lines or vessels. Flange triple eccentric multi-layer seal butterfly valve can be installed anywhere. Flange triple eccentric multi-layer seal butterfly valve series, with a certain self-cleaning capacity for steel mills, municipal pipelines and other sewage pipes can show a variety of more superiority, no maintenance, and good sealing, light operation. Structural features and principles of action: 1. Flange triple eccentric multi-level seal butterfly valve and other butterfly valve biggest difference is that: the design of the three eccentric structure. Its disc mounting center and the rotation center design has a rigorous eccentricity. When the valve is open 10 ℃ or even fully open, the sealing surface of the butterfly valve seat and the butterfly plate is in contactless state, and closed when the butterfly valve stem swivel and deflected into the seat sealing surface and make it sealed. Therefore, the process of opening and closing less, no wear and prolong the service life of the valve. 2. The butterfly valve seat with built-in O-ring rubber or fluorine plastic seal as a combination of seals. Therefore, the temperature and wear and tear with self-compensation function, ensure Guilong butterfly valve leakproof. 3. When the butterfly valve fluid pressure into the valve seat sealing chamber, due to Posson "s component of the principle of the role of the seal in the pipeline pressure and O-ring expansion force resulting from the combined force, the valve seat The sealing surface squeeze to the butterfly valve and seal the valve. This unique sealing structure with the pipeline pressure can increase the greater sealing force. 4. Butterfly valve seat can be fine-tuning in the valve after a certain number of years, when the seal Ring self-wear leakage occurs, the valve can be opened without the case, the adjustment screw to seal the pressure ring to the direction of the fine-tuning to the required size, you can get compensation and have the same sealing performance of the new valve. Flange triple eccentric multi-layer seal butterfly valve series except with manual device, still can be equipped with pneumatic actuator or electric device constitute a manual butterfly valve, pneumatic butterfly valve (feedback signal can be attached plus electric valve positioner) and electric butterfly valve three Class six products.
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