The Prime Aire Plus PAH line of priming-assisted centrifugal pumps from Gorman-Rupp are available in sizes from 3 through 16 inches, heads to 575 feet, and flows to 15,000 gpm for clear-liquid, high-pressure applications. They are available coupled to flex Tier 3 or IT4-compliant engines or premium-efficiency (EISA) electric motors. They employ a venturi/compressor priming system. The compressor is integral on the engine version and a shelf-mount design on the electric units. They have externally adjustable running clearances, a ductile iron body and impeller, two lip seals and an atmospheric vent to ensure bearing protection, and oil-lubricated bearings. 419/755-1011; www.grpumps.com.