Grundfos Technical Institute

Vertical Turbine Sump Design






Course Length: 1 hour
Compatible with mobile devices.

Pump inlet conditions are simultaneously one of the most underrated aspects of pumping station design and probably the greatest reason for pumping station success or failure. A pump's performance depends greatly on the quality of the pump intake. Recommendations in this presentation follow guidelines set forth by the Hydraulic Institute Standard 9.8 on Pump Intake Design. Many vertical turbine sump installations require a multiple-pump intake structure. This is quite common for cooling tower applications. The pump intake design must provide reasonable velocity distribution at the pump inlet, reduce swirling, severely limit air entrainment, satisfy NPSH conditions, and afford enough submergence to avoid vortices. Having adequate pump inlet conditions will greatly reduce vibration and cavitation, pump system maintenance, and the loss of pump performance.

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