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The Gorman-Rupp Company’s priming assisted silent pump offers pumping capacities to 920 gpm and heads to 134 feet, and handles 3” diameter spherical solids. All Prime Aire® pumps feature Gorman-Rupp’s patented priming system, which uses a venture and compressor, eliminating the leaks associated with traditional vacuum-assisted pumps. An oversized, oil-lubricated mechanical seal allows the pump to run dry continuously without damage. Our lightweight aluminum acoustically treated enclosure offers excellent corrosion resistance and reduced sound levels well below industry standards (as low as 63 dBa under full load). This pump is ideal for use on sewer by-pass applications in residential areas or any sound sensitive area.