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  2. Fire flapper - Wikipedia

    en.wikipedia.org/wiki/Fire_flapper

    A flapper is often part of the standard equipment on a fire engine and may also be set up inside and around forests and at heaths in order to take immediate action if a fire is seen. The flapper's technique has been developed from using a wet green pine bough, and wet burlap sacks in the rural south US, to swat the fire known as "wet sacking" a ...

  3. Nozzle and flapper - Wikipedia

    en.wikipedia.org/wiki/Nozzle_and_flapper

    The nozzle and flapper mechanism is a displacement type detector which converts mechanical movement into a pressure signal by covering the opening of a nozzle with a flat plate called the flapper. [1] This restricts fluid flow through the nozzle and generates a pressure signal.

  4. Niagara Conservation - Wikipedia

    en.wikipedia.org/wiki/Niagara_Conservation

    The "SpraySmart" program replaced nozzles that use over three gallons of hot water per minute with Niagara nozzles that use 1.28 gallons per minute. [ 11 ] In 2011, the Elsinore Valley Municipal Water District in Lake Elsinore, California launched a free water conservation program that replaced old toilets with Niagara Conservation's Stealth ...

  5. Flapper - Wikipedia

    en.wikipedia.org/wiki/Flapper

    Although the word was still largely understood as referring to high-spirited teenagers, [20] gradually in Britain it was being extended to describe any impetuous immature woman. [a] By late 1914, the British magazine Vanity Fair was reporting that the Flapper was beginning to disappear in England, being replaced by the so-called "Little ...

  6. North American Fire Hose Coupler Incompatibilities - Wikipedia

    en.wikipedia.org/wiki/North_American_Fire_Hose...

    U.S. War Department adopted a standard Quartermaster's Department fire hose coupling, that proved troublesome and was abandoned even while the standard was still in effect. (1917 proceedings of the NFPA) 1904 2 + 1 ⁄ 2-inch ID, 3 + 1 ⁄ 16-inch OD, 7.5 tpi 3, 6 tpi 3 + 1 ⁄ 2-inch 7.5 tpi 4 + 1 ⁄ 2-inch, 4 tpi

  7. Why norovirus is so hard to kill: Here's how to protect ... - AOL

    www.aol.com/why-norovirus-hard-kill-heres...

    Even if you have had norovirus before, you can still be infected every year, because there are many different types of the bug, owing to the rapid mutation rate seen in RNA viruses like norovirus.

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