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Shutter ventilation butterfly valve adopts high quality steel plate welding, its structure is simple, light weight, simple structure and easy tomaintain and use.it is suitable for metallurgy, mine, cement, chemical, power generation and other industries. Ventilation butterfly valve can be divided into electric ventilation butterfly valve, manual ventilation butterfly valve, pneumatic valve, shutter ventilation butterfly valve, circle ventilation butterfly valve, the square ventilation butterfly valve and so on.
