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The JD745X multi-functional water pump control valve is an intelligent valve installed at the outlet of pumps in high-rise building water supply systems and other water supply systems to prevent backflow, water hammer, and water shock phenomena. This JD745X multi-functional water pump control valve combines the functions of an electric valve, a check valve, and a water hammer eliminator, effectively enhancing the safety and reliability of the water supply system. It integrates the technical principles of slow opening, rapid closing, and slow closing to eliminate water hammer into a unified system, preventing the occurrence of pump-starting water hammer and pump-stopping water hammer. By simply operating the pump motor start/stop button, the JD745X multi-functional water pump control valve can automatically achieve start-up and shutdown according to pump operation procedures, offering high flow capacity and minimal pressure loss. The diaphragm type is suitable for valves with a diameter below 600 mm.