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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. 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.

4. Fire sprinkler system - Wikipedia

   en.wikipedia.org/wiki/Fire_sprinkler_system

   A sign warns hotel guests not to hang items from fire sprinklers. 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 ...

5. Impact sprinkler - Wikipedia

   en.wikipedia.org/wiki/Impact_sprinkler

   Impact sprinkler head. 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.

6. Sprinkler fitting - Wikipedia

   en.wikipedia.org/wiki/Sprinkler_fitting

   Sprinkler fitting is a skilled trade that consists of assembling, installing, testing, repairing, inspecting, and certifying automatic fire suppression systems and their associated piping in commercial, industrial and residential buildings.

7. Irrigation - Wikipedia

   en.wikipedia.org/wiki/Irrigation

   Newer systems have drop sprinkler heads as shown in the image that follows. As of 2017 most center pivot systems have drops hanging from a U-shaped pipe attached at the top of the pipe with sprinkler heads that are positioned a few feet (at most) above the crop, thus limiting evaporative losses. Drops can also be used with drag hoses or ...