What is cavitation in pool systems?

Cavitation in pool systems refers specifically to the phenomenon where partial vacuums are formed when the pump exceeds the available water supply. This occurs when the pressure in the system drops below the vapor pressure of the water, leading to the formation of vapor bubbles. When these bubbles travel to regions of higher pressure within the pump, they collapse violently, causing shock waves that can damage internal components such as impellers and casings.

Understanding cavitation is essential for pool operators because it can lead to significant mechanical failures and decreased efficiency of the pool's circulation system. Proper maintenance and ensuring that the pump is appropriately sized for the pool’s design can help mitigate the risks associated with cavitation.