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The Wood Screw Pump is a low-lift axial-flow drainage pump designed by A. Baldwin Wood in 1913 to cope with the drainage problems of New Orleans. Wood's extremely efficient pumps replaced less efficient pumps in the city's drainage system, prior to which the city had experienced chronic flooding problems, bringing diseases such as malaria and ...
The pump itself is the load and the truck always operates at maximum weight. In transit the boom is folded front to rear. In use the pump uses outriggers and the boom unfolds forward over the cab or to either side. Large pumps can have multiple extra axles. Concrete conveyors have a telescopic conveyor belt. They do similar work to a pump but ...
Pumps come in diameters from 90 mm (3.5 inches) to 254 mm (10 inches) and vary between 1 metre (3 ft) and 8.7 metres (29 ft) in length. The motor used to drive the pump is typically a three-phase, squirrel cage induction motor, with a nameplate power rating in the range 7.5 kW to 560 kW (at 60 Hz). [3]
In the United States, 50% of homes had disposal units as of 2009, [12] compared with only 6% in the United Kingdom [13] and 3% in Canada. [14]In Britain, Worcestershire County Council and Herefordshire Council started to subsidize the purchase of garbage disposal units in 2005, in order to reduce the amount of waste going to landfill and the carbon footprint of garbage runs. [15]
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Most systems use 100 or 130 mm (4 or 5 inch) diameter aluminum pipe. ... but the development of gas-powered pumps in the mid-1930s pushed wells deep into the Ogallala ...