Kepler stainless steel wafer-type pneumatic butterfly valve can be used in industries such as water treatment, food, energy, navigation, hydropower, metallurgy, and textiles, and is especially suitable for two-way sealing and valve body corrosion-prone occasions. It is used as a control or switch control. The product is used in the environment with temperature -20℃≤150℃ and nominal pressure ≤1.6MPa.