The pneumatic butterfly valve consists of a pneumatic actuator and a butterfly valve. It utilizes a circular butterfly plate that rotates with the valve rod to achieve the opening and closing action, serving as an air-operated valve for actuation purposes. Primarily used as a cutting valve, it can also be designed with the functionality of regulation or section valve with regulating capabilities. Currently, the use of butterfly valves in low-pressure pipelines with medium to large diameters is increasingly common.

The plate thickness is the resistance encountered by the medium as it flows through the valve body, thus resulting in a minimal pressure drop when passing through the valve, which offers excellent flow control characteristics. The KATUM butterfly valve comes in two sealing types: soft seal and metal seal. Valves with metal seals generally have a longer lifespan than those with soft seals.

If specifying a butterfly valve for flow control, the key is to correctly select the valve size and type. The structural principle of butterfly valves is particularly suitable for manufacturing large-diameter valves. Butterfly valves are not only widely used in general industries such as oil, gas, chemicals, and water treatment but also applied in the cooling water systems of thermal power plants.