Feature: 1. Self 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). 2. Pressure 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. 3. Working Medium: The diaphragm pressure pump is suitable for liquids without oil, strong corrosion, strong acid and alkali, and solid particles. 4. Note Tips: The diaphragm pressure pump shall be used in a dry and ventilated place. And the pump cannot be put into water for operation. 5. Convenient 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. Specification: Item Type: Diaphragm Water Pump Material: Plastic Gross Weight: 1249g / 44.1oz Size: 187x98x72mm / 7.4x3.9x2.8in Water Inlet Outlet Connector: G1/4, applicable to G3/8, hose barb Usage: For spray machine, spray cleaning device with small flow and large pressure; Small flow water purification system, filter Applicable Industries: Medicine, shipping, fishery breeding, industry, agriculture, housekeeping and other industries. Package List: 1 x Diaphragm Pump4 x Accessories Note: 1. Installed in a dry and ventilated location; The water pump cannot be put into water for operation;2. Duty cycle: intermittent (different continuous working time under different pressures);3. The pump can be controlled by pressure switch or bypass. For power control, you can select the pump without pressure switch or bypass.