Diaphragm pump with selfpriming capability This diaphragm pump combines the advantages of a selfpriming pump with the reliability of a diaphragm design to deliver steady, dependable pumping performance. Automatic on/off operation The pump automatically powers off when the water outlet is closed and automatically powers on when the outlet is opened, enabling hands operation and energy efficiency. Overpressure protection A builtin pressure switch automatically cuts off power if the water outlet pressure becomes too , protecting the pump and connected equipment. Key benefits Reliable selfpriming performance for easy startup in variable conditions Automatic start/stop reduces energy use and eliminates manual monitoring Overpressure protection helps extend pump life and prevent damage Applications and use scenarios Garden irrigation: move water from a storage barrel or reservoir to garden hoses or drip lines with automatic control. Household water transfer: transport water between storage tanks or containers for cleaning, filling troughs, or limitedscale tasks without constant supervision. Small water features and hydroponics: supply water to pumps, with automatic cycling and protection from overpressure for stable operation.