Gorman-Rupp Super-U Series® 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.  The pumps not only deliver high efficiencies (up to 75%), they also perform efficiently across a broad operating range.  Varying machine loads that cause pumps to operate right or left of its best efficiency point will affect operating efficiency by only a small percentage.  These pumps offer the same reliability and performance as the U-Series with additional features.