A pump is a machine for transporting liquids or Gases or mixtures of liquids, gases and / or solids.

In a narrower sense, in contrast to blowers and compressors for gases and compressible media, pumps for incompressible media are referred to as liquid pumps. This means that the volume of the fluid remains approximately constant as the pressure increases. In practice, this also includes liquid mixtures with a low solid or gas content.

Depending on the direction of the energy flow, pumps belong to the working machines.


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