Gorman-Rupp Super-U SeriesĀ® pumps are among the most efficient self-priming, solids handling pumps available. Their unique hydraulic design and smooth wall volute casing minimize friction loss and drag. The multi-vane, open impeller is designed for high efficiency operation yet can still handle limited solids. Gorman-Rupp offers a wide selection of pumps and pumping systems for many fluid-handling applications. Ranging in diverse sizes from fractional horsepower pumps to the largest of flood control pumps, Gorman-Rupp pumps are in continuous duty around the globe.