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It emits a mix of water and nitrogen from a single source that simultaneously cools the affected area and extinguishes the fire. [5] It is approved for use in areas containing flammable liquids & hazardous machinery. [6] Sprinkler heads and Sprinkler systems, [7] Grooved valves and Grooved pipe fittings, [8] and expansion joints. [9]
The fire suppression piping may contain water, air (in a dry system), antifreeze, gas or chemicals as in a hood system, or a mixture producing fire retardant foam. Sprinkler fitters work with a variety of pipe and tubing materials including several types of plastic, copper, steel, cast iron, and ductile iron. [3]
Fire protection was a new science in this time period and depended on manually turning on the sprinklers. In 1874, Henry S. Parmelee of New Haven, Connecticut, patented an automatic sprinkling device, and four years later the Providence Steam and Gas Pipe Co. secured the right to manufacture and install it, paying royalties to the inventor.
These disadvantages are less problematic for fire sprinkler installations because standing water in the steel pipes does not flow, except during occasional tests or activation by a fire. Introducing oxygen dissolved in freshwater supplies will cause some corrosion, but this soon stops without any source of additional water-borne oxygen.
A Siamese inlet to a standpipe or sprinkler system. Named for early application of steam engines for pumps. Steamer outlet Large outlet of fire hydrant. Storz coupling A type of coupling used on fire hose. The coupling is sexless, and secures with a 1/4 turn of the coupling. The coupling may or may not have some sort of locking device. Straight ...
Spanish fire hose coupling. This coupling is used by Spanish firefighters, and is defined by Spanish Standard UNE 23400. [15] It is a sexless coupling with three engaging lugs, and is available in several different sizes, including Barcelona 25 (25 mm hose ID), Barcelona 45 (45 mm hose ID), and Barcelona 70 (70 mm hose ID).
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