Pneumatic ventilation butterfly valve

The pneumatic butterfly valve of the pneumatic ventilation butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the pneumatic ventilation butterfly valve body, the disc-shaped butterfly plate rotates around the axis at an angle between 0 ° and 90 °. When it rotates to 90 °, the valve is fully open. Butterfly valves have two sealing types: elastic sealing and metal sealing. Elastic sealing valve, the sealing ring can be embedded on the valve body or attached around the butterfly plate.

Pneumatic ventilation butterfly valve is a non enclosed rotating butterfly valve used in ventilation ducts. It is designed and manufactured in the form of a welded structure of a centerline disc plate and a short structural steel plate, and is used as a flow regulator or switch control for gas media. Pneumatic ventilation butterfly valves have low flow resistance, high flow coefficient, light weight, fast opening and closing, and can be used in conjunction with valve positioners to achieve proportional adjustment. They are particularly suitable for controlling the flue gas of large-diameter and high flow boilers.

Pneumatic ventilation butterfly valve has a simple structure, small volume, and light weight, consisting of only a few parts. And it only needs to rotate 90 ° to achieve suitable opening and closing speed, with simple operation, and the valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance of the medium flowing through the valve body, so the pressure drop generated by this valve is very small, thus having good flow control characteristics.

This valve can be equipped with various driving devices, such as manual device, worm gear transmission device, pneumatic device, and electric device. Ventilation butterfly valves are widely used in industrial production lines such as metallurgy, petrochemicals, electricity, building materials, and mining to control or regulate the medium gas.