The volute of a centrifugal pump is the casing that receives the fluid being pumped by the impeller, slowing down the fluid's rate of flow. A volute is a curved funnel that increases in area as it approaches the discharge port. The volute converts kinetic energy into pressure by reducing speed while increasing pressure, helping to balance the hydraulic pressure on the shaft of the pump.
- Hoffman, Russell D. (February 2002). "All About Pumps — Volute Pumps". The Internet Glossary of Pumps. The Animated Software Company. Retrieved 2009-05-23.
- "Centrifugal Pumps: Basic Concepts of Operation, Maintenance, and Troubleshooting (Part I)". The Chemical Engineers' Resource Page. www.cheresources.com. 2008. Retrieved 2009-05-23.
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