What does the volute refer to in a pump?

The volute is a critical component of a pump, specifically functioning as the casing that helps guide the fluid flow after it has been pumped. Its design allows for the gradual expansion of fluid volume, which converts velocity into pressure. This is crucial for efficiently moving the fluid through the system and improving overall pump performance.

In the context of a centrifugal pump, the volute helps in distributing fluid evenly in the casing, ensuring that the pump operates effectively across various flow rates. The shape of the volute is designed to minimize turbulence and energy loss, which enhances the hydraulic efficiency of the pump.

Understanding the role of the volute as the pump casing underscores its importance in creating a pressure differential required for the pump to function correctly. This distinguishes it from other pump components, which have different specific functions, such as minimizing leakage or providing intake for the fluid.