Butterfly valves are a type of valve used to control the flow
of fluids or gases in a piping system. They consist of a circular disc or plate
that is mounted on a rotating shaft, which can be turned to open or close the
valve. When fully open, the disc allows for maximum flow of the fluid or gas,
while closing the disc reduces or stops the flow completely. Butterfly valves are commonly used in a
wide range of industries, including water treatment, food and beverage,
chemical processing, and HVAC systems. They are known for their compact size,
ease of operation, and low cost compared to other types of valves.