volute centrifugal pump

A volute centrifugal pump is a type of centrifugal pump characterized by its spiral-shaped casing. This design is crucial for its operation. Fluid enters the pump near the center of a rapidly rotating impeller and is propelled outward by the impeller's vanes. This outward motion creates centrifugal pressure, forcing the fluid into the volute casing.12

The spiral shape of the volute casing gradually widens, which slows down the fluid's velocity and, in turn, increases its pressure. This mechanism allows centrifugal pumps, including volute types, to move liquids and gases, providing a continuous flow at high pressure. They are robust, relatively inexpensive, quiet, and dependable, with performance largely unaffected by corrosion or erosion.23