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  2. Irrigation sprinkler - Wikipedia

    en.wikipedia.org/wiki/Irrigation_sprinkler

    They can be designed to rotate in a full or partial circle. Rainguns are similar to impact sprinklers, except that they generally operate at very high pressures of 2.8 to 9.0 bar (280 to 900 kPa; 40 to 130 lbf/in 2 ) and flows of 3 to 76 L/s (50 to 1,200 US gal/min), usually with nozzle diameters in the range of 10 to 50 mm (0.5 to 1.9 in).

  3. K-factor (fire protection) - Wikipedia

    en.wikipedia.org/wiki/K-factor_(fire_protection)

    This page was last edited on 28 December 2024, at 14:21 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  4. Fire sprinkler system - Wikipedia

    en.wikipedia.org/wiki/Fire_sprinkler_system

    "The sprinkler system worked all too well, causing a flood that washed away all the food and a good part of the kitchen." [3] [better source needed] Ambrose Godfrey created the first successful automated sprinkler system in 1723. [4] [full citation needed] He used gunpowder to release a tank of extinguishing fluid. [4] [full citation needed]

  5. Fire sprinkler - Wikipedia

    en.wikipedia.org/wiki/Fire_sprinkler

    A fire sprinkler mounted on a ceiling. A fire sprinkler or sprinkler head is the component of a fire sprinkler system that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been exceeded. Fire sprinklers are extensively used worldwide, with over 40 million sprinkler heads fitted each year.

  6. Mitral valve replacement - Wikipedia

    en.wikipedia.org/wiki/Mitral_valve_replacement

    Mitral valve replacement is a procedure whereby the diseased mitral valve of a patient's heart is replaced by either a mechanical or tissue (bioprosthetic) valve. The mitral valve may need to be replaced because: [1] The valve is leaky (mitral valve regurgitation) The valve is narrowed and doesn't open properly (mitral valve stenosis)

  7. Aortic valve repair - Wikipedia

    en.wikipedia.org/wiki/Aortic_valve_repair

    Repair is a more recent alternative to replacement; in many instances replacement will be the only realistic option because of severe destruction of the valve. [ 6 ] While replacement of the aortic valve is a safe and reproducible procedure it may still be associated with the long-term occurrence of so-called valve-related complications.