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2. Tap (valve) - Wikipedia

   en.wikipedia.org/wiki/Tap_(valve)

   Faucet is the most common term in the US, similar in use to "tap" in British English, e.g. "water faucet" (although the term "tap" is also used in the US). Spigot is used by professionals in the trade (such as plumbers), and typically refers to an outdoor fixture.

3. Plumber - Wikipedia

   en.wikipedia.org/wiki/Plumber

   The origin of the word "plumber" dates from the Roman Empire. [3] [4] Roman roofs used lead in conduits and drain pipes [5] and some were also covered with lead; lead was also used for piping and for making baths. [6]

4. Plumbing - Wikipedia

   en.wikipedia.org/wiki/Plumbing

   Plastic hot and cold supply piping for a sink Plastic pipe is in wide use for domestic water supply and drain-waste-vent (DWV) pipe. Principal types include: Polyvinyl chloride (PVC) was produced experimentally in the 19th century but did not become practical to manufacture until 1926, when Waldo Semon of BF Goodrich Co. developed a method to ...

5. Reduced pressure zone device - Wikipedia

   en.wikipedia.org/wiki/Reduced_pressure_zone_device

   RPZDs are often chosen instead of an air gap since the head loss across the RPZD is much smaller. The device consists of two independent check valves, plumbed in series, with a pressure monitored chamber between (also known as the zone). The chamber is maintained at a pressure that is lower than the water supply pressure, but high enough to be ...

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   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

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