What is hydraulic shock in relation to pumps?

Hydraulic shock, also known as water hammer, occurs when there is a sudden change in the velocity of fluid within a piping system. This change can happen, for example, when a pump is turned on or off rapidly, or when a valve is closed suddenly. The rapid acceleration or deceleration of the fluid creates a pressure surge that travels through the system, leading to potential damage to pipes, joints, and fittings.

This phenomenon is significant for pump operators to understand because it can result in significant mechanical stress, which could cause equipment failure or leaks. The ability to mitigate hydraulic shock involves careful control of flow rates and the timing of pump operations to allow for smoother changes in pressure and flow velocity. Recognizing this ensures the longevity and efficiency of pumping systems, as well as the safety of their operation.