What issue can unusually low PSI cause in water pumps?

Unusually low PSI (pounds per square inch) can lead to cavitation in water pumps, which is a significant concern in pump operation. Cavitation occurs when the pressure within the pump drops below the vapor pressure of the water, leading to the formation of vapor bubbles. As these bubbles move through the pump and into areas of higher pressure, they collapse or implode, causing shock waves that can damage the pump's impellers and other internal components.

Cavitation can result in reduced pump efficiency, increased wear and tear, and even catastrophic failure if not addressed. It is vital for operators to monitor pressure levels and ensure that they remain within an optimal range to avoid this phenomenon. Maintaining appropriate PSI helps to preserve the integrity and longevity of the pump system.