Gorman-Rupp Prime Aire trash pump

The diesel-driven Prime Aire trash pump from Gorman-Rupp has a revolutionary impeller design which is said to be able to handle large solids while maintaining efficiency.

The pump is a 75 x 75 mm centrifugal unit which can deliver flows from 3 L/s through to 28 L/s, with heads to 40 m. The pumps have a ‘stagger-wing’ vortex impeller which is designed to enable the pump to handle a 76 mm spherical solid along with stringy materials such as rags. The difference between this impeller and other vortex impellers is its improved efficiency and head capabilities.

The pump’s priming capability comes from the company’s priming system which includes a compressor and venturi device ‘pulling’ a vacuum through Gorman-Rupp’s own air separation chamber. This, combined with an oversized, oil-lubricated mechanical seal, allows pumps to prime reliably and to run dry continuously without damage.

The PAV3B60C-3TNV70 is powered by a Yanmar liquid-cooled diesel engine that is USA EPA certified to meet interim Tier IV emission standards. Standard ‘auto-start’ control panels include safety shutdown switches for high liquid temperature and low oil pressure. They also include tachometer, voltmeter, hour meter, coolant temperature gauge, oil-pressure gauge, manual/stop/auto key switch, 10 A push-button circuit-breaker, start-up warning delay, muffler with weather cap and throttle control.

The units are available as open skid-mount units or with acoustically rated canopies and can also be fitted to road-registerable trailers.