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2. Glossary of firefighting equipment - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firefighting...

   A sprinkler system having pressurized air (rather than water) in the distribution pipes until a heat-activated sprinkler head opens and releases the stored air pressure, which in turn opens the main water valve (and possibly an accelerator valve) to flow water to the open sprinkler(s); used where the protected premises are not heated during ...

3. Impact sprinkler - Wikipedia

   en.wikipedia.org/wiki/Impact_sprinkler

   An impact sprinkler (sometimes called an impulse sprinkler) is a type of irrigation sprinkler in which the sprinkler head, driven in a circular motion by the force of the outgoing water, pivots on a bearing on top of its threaded attachment nut. Invented in 1933 by Orton Englehart, it quickly found widespread use.

4. Fire sprinkler system - Wikipedia

   en.wikipedia.org/wiki/Fire_sprinkler_system

   Each closed-head sprinkler is held closed by either a heat-sensitive glass bulb or a two-part metal link held together with fusible alloy. The glass bulb or link hold in place a "pip cap" which acts as a plug to prevent water from flowing, unless the ambient temperature around the sprinkler reaches the design activation temperature of the ...

5. These Are the Best New Songs We Heard This Month - AOL

   www.aol.com/best-songs-heard-month-142900895.html

   In ‘Sugar Water Cyanide,’ Black has a raging beat set to elementary, four-square-style chants. It’s a fun track, showing that even in the dead of winter, we can always find time for a rave

6. Standpipe (firefighting) - Wikipedia

   en.wikipedia.org/wiki/Standpipe_(firefighting)

   External access point for fire sprinkler and dry standpipe at a building in San Francisco, US Antique wet standpipe preserved at Edison and Ford Winter Estates. A standpipe or riser is a type of rigid water piping which is built into multi-story buildings in a vertical position, or into bridges in a horizontal position, to which fire hoses can be connected, allowing manual application of water ...

7. 7 Fast Food Chains That Use Real, High-Quality Chicken - AOL

   www.aol.com/finance/7-fast-food-chains-real...

   While many fast-food joints claim they serve “real” chicken, some still rely on antibiotic-laden, factory-farmed mystery meat. Here are 7 chains that actually use high-quality, real chicken.