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Butterfly valves have a wide range of applications, including water supply, wastewater treatment, fire protection, and gas supply, as well as in the chemical and oil industries, fuel handling systems, and power generation. Some of the benefits of this type of valve include its simple construction, which takes up little space, as well as its lightweight and lower cost when compared to other valve designs. Depending on the situation, the valves can be controlled by handles, gears, or actuators.

Butterfly valves can be centric or eccentric in design. A centric (concentric) butterfly valve has the stem in the center of the disc and the disc in the bore. According to the double and triple offset valve categories, the eccentric butterfly valve has one or more stems (stub shafts) offset from the center.