Ventilation butterfly valve

Ventilation butterfly valve is a specialized valve mainly used in various places that require a large amount of air circulation and large-scale pipeline equipment for external ventilation. It is used for opening, closing, and regulating air exchange and circulation pipelines such as civil defense, coal mines, and large shopping malls. The butterfly plate structure of the ventilation butterfly valve produced by Shanghai Meiyanyi Pump Valve includes flat plate and louver structures. The working principle is to rotate the valve disc (butterfly plate) around its own axis inside the valve body to achieve the purpose of opening, closing or adjusting pipeline equipment. It has the advantages of simple structure, lightweight volume, easy operation, and good performance. The ventilation butterfly valve does not have strict requirements for the sealing inside the valve. In addition, the ventilation butterfly valve can be quickly opened and closed by rotating 90 °, which is particularly suitable for situations that require quick opening and closing.