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A jockey pump, also known as a pressure-maintenance pump, is a small pump connected to a fire suppression system near the fire pump and is intended to maintain pressure in a fire protection piping system. These pumps recover pressures lost from gradual, slow pressure declines in a system due to temperature changes, trapped air escapement, or ...
The fire pump was reinvented in Europe during the 16th century, reportedly used in Augsburg in 1518 and Nuremberg in 1657. A book of 1655 inventions mentions a steam engine (called a fire engine) pump used to "raise a column of water 40 feet [12.2 m]", but there was no mention of whether it was portable.
Variable Speed Fire Pump Controllers were invented and released with a UL Listing for fire pump service in 2003 by Master Control Systems, Inc. [1] [2] Paragraph 10.5.5 in the 2003 edition of NFPA-20 recognized Variable Speed as an accepted method for operating the fire pump. Then in the NFPA-20 2007 edition, section 10.10 was added to clarify ...
rigid interlocking end-pieces on fire hose; used for connecting hose to hydrants or fire engine pumps and other hose appliances (nozzles, wyes, manifolds, strainers, etc.); standardized sizes and threads or other (non-threaded) pressure-sustaining interlocks (e.g., "Storz" or other "quarter-turn" connectors); lugs, cams, or pins are used to ...
By 1938 large numbers of the Coventry trailer pumps were being purchased by fire brigades, and demonstrated to ARP staff and members of the Auxiliary Fire Service. The "Coventry Climax trailer pump" was described as being capable of delivering 250–300 imperial gallons per minute (1,100–1,400 L/min).
Some problems feature no easy solution. Call them a sticky wicket, a wicked problem, or the Riemann hypothesis. Or, college football’s transfer portal windows. Coaches from Steve Sarkisian of ...
A quintuple combination pumper or quint is a fire-fighting apparatus that serves the dual purpose of an engine and a ladder truck. “Quintuple” refers to the five functions that a quint provides: pump, water tank, fire hose, aerial device, and ground ladders. [1] Tillers and tractor-drawn aerials also have quint features, and are dubbed ...
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