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Similar design to the DC30/31/34 but with detachable extension tube, modified electronics and motorised brush head. Launched in 2009. It was replaced by the DC44 and DC59. [33] DC44 2012 The Dyson Digital Slim DC44 is a cordless handstick vacuum cleaner which uses the same motorised brush head as the DC35 as well as the Radial Root Cyclone ...
The vacuum head may be unpowered, or have beaters operated by an electric motor or by an air-driven turbine. The dirt bag or collection bin in a central vacuum system is usually so large that emptying or changing needs to be done less often, perhaps a few times per year for an ordinary household.
Artist rendition of liquid rocket engine J-2X with expanded nozzle extension. The mockup of NK-33-1 with a nozzle extension. A nozzle extension is an extension of the nozzle of a reaction/rocket engine. The application of nozzle extensions improves the efficiency of rocket engines in vacuum
A vacuum breaker is a device that prevents water from being siphoned backward in a direction it is not desired to go. They are commonly placed on a bibcock valve or toilet or urinal flush valve, in which application they can prevent hose or drainage water from back-siphoning into the public drinking water system. This prevents contamination ...
Charge a hose: To make water pressure available on a hose in final preparation for its use. This is done on the scene after the hose is deployed, but prior to entering the fire danger area. (Also known as "charge the line") Charged hose: A hose that is filled with water and pressurized; ready to use. The charged line is much more difficult to ...
A vacuum cleaner uses a partial vacuum to suck up dust and dirt, usually from floors. Daniel Hess of West Union, Iowa, invented the first vacuum cleaner in 1860. Calling it a carpet sweeper instead of a vacuum cleaner, his machine did, in fact, have a rotating brush like a traditional vacuum cleaner which also possessed an elaborate bellows ...
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