What does trimming an impeller entail?

Trimming an impeller specifically refers to the process of reducing the size of the impeller. This adjustment is typically done to modify the flow rate or head pressure generated by a pump, thereby optimizing its performance for specific application requirements. By trimming the impeller, engineers can achieve a more efficient operation, which can lead to energy savings and a better match between the pump's output and the system's needs.

While changing the volute case, sharpening the blades, or reconfiguring the pump system all relate to pump maintenance and performance optimization, they do not accurately define the trimming process. Trimming is about adjusting the impeller's dimensions rather than altering other components or features of the pump system.