What is the function of wear rings in a pump system?

Wear rings play a crucial role in the efficiency and performance of a pump system. Their primary function is to control the leakage that occurs between the pump's discharge and suction sides. This is vital because it helps maintain effective hydraulic performance by reducing the amount of fluid that bypasses the intended flow path through the pump. By minimizing leakage, wear rings help maintain higher pressure on the discharge side and improve the overall efficiency of the pump.

When wear rings are installed properly, they create a controlled clearance that allows the pump to operate effectively while minimizing wear on the impeller and casing over time. While some other components may provide support to the impeller or influence the pump's speed, the specific role of wear rings is centered around managing the flow of liquid and ensuring that the pump operates within its designed performance specifications.