A pump is a mechanical device used to force a fluid (a liquid or a gas) to move forward inside a pipeline or a hose. They are also used to produce pressure by the creation of a suction (partial vacuum), which causes the fluid to go up to a higher altitude. Uses of Pumps: • A pump is used to raise pressure of liquids. • It can hold any kind of liquid, even dirty with solid particulates to some extent. • In power plants, pumps are used to hold ash slurry made with water, which is highly erosive in nature. • In chemical industries, pumps are used to handle corrosive fluids. Check the list of pump companies: