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pump is a device that moves fluids (liquids or gases), or sometimes slurries, by mechanical action. Pumps can be classified by their method of displacement into positive displacement pumps, impulse pumps, velocity pumps, gravity pumps, steam pumps, and vacuum and valveless pumps. There are three basic types of pumps: positive displacement, centrifugal, and axial flow pumps. In centrifugal pumps the direction of fluid flow changes ninety degrees as it flows over an impeller, while in axial flow pumps the direction of flow does not change. When a casing contains only one rotating impeller, it is called a single-stage pump. When a casing contains two or more rotating impellers, it is called a double or multistage pump. Vacuum pumps are simply compressors that absorb the gas contained at a pressure below atmospheric pressure, compress it and discharge the gas at atmospheric pressure creating a vacuum where the contained gas originated. Characteristics 230V 60Hz Water pump 1 phase NULL