When stripping a tank, what consequence may excessive air in the suction line cause?

When stripping a tank, excessive air in the suction line can lead to loss of suction. This phenomenon occurs because air can disrupt the continuous flow of liquid in the pipeline, creating a scenario where the pump is unable to maintain the necessary vacuum or pressure differentials needed to draw the liquid from the tank efficiently.

In practical terms, when air infiltrates the suction line, it can create pockets or bubbles that obstruct the movement of the liquid. This can lead to the pump "cavitating", which means it cannot effectively draw in the fluid, resulting in a significant reduction or complete loss of suction. Therefore, maintaining a liquid-tight suction line is crucial for the efficient operation of tank stripping systems to ensure that the desired liquid is removed without interruption.