Centrifugal multistage pumps are used, when clear or turbid liquids, free from solid particles, are to be handled reliably and trouble-free. Because of their self-priming capability and owing to the multitude of material combinations, the pumps cover a wide range of applications in such fields as: the supply of drinking and utility water for greater communities and large industrial plants, the handling of fuel in decanting stations, and large tank plants the construction of fire-extinguishing equipment, the construction of cooling plants, shipbuilding (ballast and stripping pumps), the chemical industry and the petrochemistry