Manual wafer butterfly valves, as a common fluid control device, play a crucial role in industrial pipeline systems. Its structural design is compact. The butterfly plate inside the valve body can be rotated by manually operating the handle, thereby achieving the opening, closing or flow regulation of the fluid medium. This type of valve is particularly suitable for installation environments with limited space. The wafer connection method not only simplifies the installation process but also reduces leakage points and enhances the overall sealing performance of the system. Manual wafer-type butterfly valves are usually made of high-quality materials such as stainless steel, cast iron or copper alloys to meet the requirements of different media and working conditions, and have good corrosion resistance and wear resistance. In addition, depending on the specific application scenarios, seals of different materials can also be selected and equipped to ensure efficient and stable operation under various temperature and pressure conditions. Whether in water treatment, chemical engineering, petroleum, natural gas or food processing industries, manual wafer-type butterfly valves have become an indispensable part of fluid control systems due to their reliable performance, flexible operability and economical cost.