Butterfly valves are a type of quarter-turn valve that uses a circular disc, or "butterfly," to control the flow of fluids through a pipeline. Butterfly valves can be operated manually with a handle or lever, or they can be automated using electric, pneumatic, or hydraulic actuators for remote control. butterfly valves are versatile devices widely used in various industries for their simplicity, cost-effectiveness, and quick operation. The choice of a specific butterfly valve depends on factors such as the application, pressure and temperature requirements, and the desired level of sealing performance.