Turbulence Cavitation 1-3.4

Cavitation means that cavities or bubbles are forming in the liquid that we're pumping. These cavities form at the low pressure or suction side of the pump, causing several things to happen all at once:

The cavities or bubbles will collapse when they pass into the higher regions of pressure, causing noise, vibration, and damage to many of the components.

We always prefer to have liquid flowing through the piping at a constant velocity. Corrosion or obstructions can change the velocity of this liquid, and any time you change the velocity of a liquid, you change its pressure. Good piping layouts would include :

The metric numbers are :

FLOW
MINIMUM SUBMERGENCE

4,500 M3/HR

1.2 METERS

22,500 M3/HR

2.5 METERS

40,000 M3/HR

3.0 METERS

45,000 M3/HR

3.4 METERS

55,000 M3/HR

3.7 METERS

See cavitation

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