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Pumps: cavitation or not.

Type of article: Article

Summary

The reason for that question: all three conditions have almost identical symptoms. Air entrainment and recirculation will also cause the same rumbling/rattling noise and high vibration as cavitation, as well as the recognizable impeller pitting damage. The major difference is that cavitation is a Net Positive Suction Head (NPSH) problem, while the other conditions have nothing to do with the suction pressure or NPSH. Consequently, the supply of additional NPSH to the inlet of the pump will make no difference to the symptoms, thus causing considerable confusion for the unwary.

Details

  • Original title: Pumps: cavitation or not.
  • Record ID : 2004-1712
  • Languages: English
  • Source: RACA Journal - vol. 19 - n. 9
  • Publication date: 2003/11
  • Document available for consultation in the library of the IIR headquarters only.

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