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With a variety of sizes and operating ranges, Gorman-Rupp’s extensive line of Prime Aire® priming-assisted (dry prime) pumps are hard-working, dependable and ready to tackle the toughest applications including large solids and slurries.
The Prime Aire system uses a venturi compressor priming chamber and priming valve which eliminates the leaks associated with traditional vacuum-assisted pumps. This unique system reduces environmental concerns on sewage bypass operations and also enables the pump to operate under flooded suction conditions without leaking. The positive priming capabilities of the PA Series make it the perfect choice for applications where a large volume of air is in the liquid being pumped, there are intermittent flows or there are long or oversized suction lines. All Prime Aire pumps are configured with EPA Tier compliant engines.
The modular design, featured on several PA Series pump models, enables the addition/removal of a lightweight, aluminum, acoustically-treated enclosure to the standard fuel base. The enclosure provides excellent corrosion resistance and offers a significant reduction in sound levels (68 dBA at 23’).
| Size | 3" (80 mm), 4" (100 mm), 6" (150 mm), 8" (200 mm), 10" (250 mm), 12" (300 mm), 14" (350 mm) |
| Max Capacity | 6320 GPM (399 lps) |
| Max Head | 420' (128 m) |
| Max Solids | 3" (76 mm) |
| Max Temperature | 160 F (71 C) |
| Materials of Construction | Cast Iron, Ductile Iron |
A dry run capability is designed into the Prime Aire® system. An oversized, oil-lubricated mechanical seal allows the pump to run dry continuously without damage. For positive, reliable priming time after time, Gorman-Rupp Prime Aire® pumps are the ones you can count on.
Model PA6C features a removable cover plate and adjustable/replaceable wearplate.
Several popular Prime Aire® models are available in a "Compressor-Over-Pump" arrangement. This innovative configuration offers a compact, flexible design while allowing ease of operation and servicing when needed.
Prime Aire® pumps are equipped with oversized, mechanical, oil-lubricated, double-floating, self-aligning seals with silicon carbide rotating and stationary faces that are designed to take the wear and tear of pumping solids, slurries and other abrasives.
Auto-Start control starts and stops the pump in response to a liquid level. The pump only starts when there is water to pump and turns itself off when the water reaches the desired level. There is never any need to waste fuel and add to costly engine overhauls.
As an alternative to the venturi/compressor priming system, Gorman-Rupp now offers an integrally mounted diaphragm vacuum pump for the priming assembly. The diaphragm primer pump offers up to 60 CFM and vacuum to 30’. This is available on select Prime Aire pump models. Consult factory for details.
Priming-assisted pumps utilize a variety of impeller types based on your specific application. Many models feature rugged, two-vane, ductile iron, semi-open solids handling impellers that handle up to 4” (101.6 mm) diameter solids. For clean water applications, pump models use higher-efficiency enclosed impellers.
