1Self Priming and Dry Rotation: The diaphragm pressure pump has a self priming function. It can run dry for a short time (no more than 30 minutes). 2Pressure Protection Switch: The diaphragm pressure pump is equipped with a pressure protection switch, which can automatically stop for protection in case of overpressure until the pressure is less than the threshold value and automatically restart. 3Working Medium: The diaphragm pressure pump is suitable for liquids without oil, strong corrosion, strong acid and alkali, and solid particles. 4Note Tips: The diaphragm pressure pump shall be used in a dry and ventilated place. And the pump cannot be put into water for operation. 5Convenient Installation: The pump is easy to install. The water pump is exquisite, small in size, light in weight, large in flow, high in pressure and stable in performance.