Flanged butterfly valve is a valve whose closing part is a disc, which rotates around the valve shaft to open and close, and mainly plays the role of intercepting and throttling the pipeline. The opening and closing part of the flanged butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjusting. Butterfly valve transmission generator, gas, natural gas, liquefied petroleum gas, city gas, hot and cold air, chemical refining, power generation, environmental protection and other engineering systems in a variety of corrosive and non-corrosive fluid media. The pipeline. Used to regulate and block media streams.

The characteristics of French butterfly valve:

1. Butterfly valve has the characteristics of simple structure, small size, light weight, less consumables, small installation size, fast switching, 90° reciprocating rotation, small driving torque and so on. It can adjust the medium in the pipeline, with closing and opening, good fluid control characteristics, and closing and sealing performance.

2. The butterfly valve can transport mud, and the liquid accumulated at the mouth of the pipe is less. Good seal at low pressure. Good adjustment performance.

3. The streamlined design of the butterfly plate reduces the loss of fluid resistance and becomes an energy-saving product.

4. Connection methods include flange connection, butt connection, butt welding connection, and lug butt connection.

5. The valve stem is a through-rod structure, which has excellent overall mechanical properties, corrosion resistance and scratch resistance after tempering treatment. When the butterfly valve is opened and closed, the valve stem only rotates and does not move up and down, so the valve stem packing is not easy to damage and the seal is reliable. The disc is secured with a tapered pin and the extension end is designed to prevent the valve from popping out and prevent the stem from collapsing if the connection between the stem and the disc is accidentally disconnected.