Centrifugal pumps circulate water and transfer liquids. They are commonly used in commercial and industrial applications, such as filtering water, boosting water pressure, and aerating ponds and fountains. Self-priming, portable utility pumps speed up drainage. Corrosion resistant pumps move chemicals and resist damage from acids or chemicals. Booster pumps increase pressure in city mains or residential buildings, and can maximize filtration operations in pond systems.