When the inlet pressure of pump is reduced to the vapour pressure of the oil,the liquid get vaporized and cavity formed.This is called pump cavitation.

Cavitation may take place when oil sucked into pump is not sufficient to fill the space created by pump rotational element.

Cavitation in pump causes/symptoms

  • Over heating
  • Vibration
  • Bearing damage
  • Mechanical damage

Reasons for cavitation in pumps

  • Inadequate oil suction
  • Air intake

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