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A Plunger Dosing System is a type of positive displacement metering pump system used for precise and controlled dosing of liquids such as chemicals, acids, alkalis, and additives in industries. It works by the reciprocating motion of a plunger (piston), which displaces a fixed volume of fluid during each stroke. These systems are widely used in water treatment plants, chemical processing, oil & gas, pharmaceuticals, food & beverage, and power plants where accurate dosing and high-pressure handling are required.