are a type of pump product powered by compressed air. The airflow drives the valve core to reciprocate, directing compressed air alternately into the left and right air chambers, which in turn causes the diaphragm to move back and forth, creating a pressure differential in the working chamber to achieve the purpose of suction and discharge of liquids. Since the moving parts do not come into contact with the conveyed medium, blockages are avoided, thereby enhancing the pump’s sewage discharge capability. This pump is also capable of handling various liquids and sewage containing particulate impurities. The pump features a compact size, lightweight design, simple structure, and ease of use and maintenance.