A pump is a mechanical device that transfers energy to a fluid (liquid, gas, or slurry) to move, pressurize, or raise it from one location to another. Pumps are widely used in water supply systems, wastewater treatment, irrigation, industrial processes, HVAC systems, and many other engineering applications. Common pump types include centrifugal pumps, which use a rotating impeller, and positive displacement pumps, which move a fixed volume of fluid with each cycle (Wikipedia).