Butterfly valve
Butterfly valves, also known as rotary valves, are simple regulating valves that can be used for on/off control of low-pressure pipeline media. Butterfly valves refer to valves where the closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing. These valves can control the flow of various fluids, such as air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. In pipelines, they mainly serve as shut-off and throttling devices. The valve's closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve opening or throttling.