What is the main purpose of wear rings in a centrifugal pump?

The main purpose of wear rings in a centrifugal pump is to separate the suction and discharge sides of the pump. These components are strategically placed to provide a sealing function that minimizes the internal leakage of the pumped liquid. By directing the flow and maintaining pressure differences between the pump's suction and discharge, wear rings help ensure that the pump operates efficiently and effectively. This separation is crucial for maintaining the performance of the pump, ensuring that enough pressure develops for the fluid to be discharged properly while minimizing the risk of mixing fluids that could lead to inefficiencies or reduced performance. This design feature is essential for reliable operation and longevity of the pump's components.