Cavitation in a pump is the result of a drop in the pressure of the liquid through the impeller eye. This reduced pressure causes bubbles to form. As the pressure of the liquid continues to drop, the bubbles collapse causing implosions. These bubbles can be collapsing so rapidly that a distinct rumbling or cracking noise is produced, which can sound like rocks passing through the pump. The hydraulic effects caused by the collapsing bubbles are strong enough to cause areas of pitting on the pump internal surfaces and a noticeable decrease in pump performance.
Cavitation can be caused by numerous factors including:
- Suction pipe too small or having a partial blockage
- Liquid temperature too high resulting in vaporisation of the liquid. Liquid boils in the pump at a lower temperature than in the atmosphere.
- Pump operating too far from its Best Efficiency Point. i.e very low head or very high head for the particular pump.
For solutions to these problems, please via email Sales Engineering or call your local Truflo Pumping Systems representative.
B-Series
