Pressure, Torque and Gears - How Traveling Sprinklers Work | HowStuffWorks
DC Fire and EMS on Twitter: "Ever wonder how a sprinkler works? It's simple and effective. Today one sprinkler head stopped a kitchen fire in a West End Apt. in it's tracks! "
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irrigation - Pop up sprinkler rotation - Home Improvement Stack Exchange
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How do fire sprinklers work? - Explain that Stuff
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