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2. Limit switch - Wikipedia

   en.wikipedia.org/wiki/Limit_switch

   In electrical engineering, a limit switch is a switch operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a control system , as a safety interlock , or as a counter enumerating objects passing a point.

3. 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.

4. Plunger - Wikipedia

   en.wikipedia.org/wiki/Plunger

   A plunger is a device driven by or against fluid pressure. [1] In plumbing, the term plunger commonly refers to handheld tools used to clear blockages in drains and pipes . Plumbing plungers consist of a rubber suction cup attached to a stick ( shaft ) usually made of wood or plastic.

5. Amazon Prime - Wikipedia

   en.wikipedia.org/wiki/Amazon_Prime

   Amazon Prime electric delivery vans in north London. In 2005, Amazon announced Amazon Prime as a membership service offering free two-day shipping within the contiguous United States on all eligible purchases for an annual fee of $79 (equivalent to $123 in 2023) [4] and discounted one-day shipping rates. [5]

6. Plunger pump - Wikipedia

   en.wikipedia.org/wiki/Plunger_pump

   A plunger pump is a type of positive displacement pump where the high-pressure seal is stationary and a smooth cylindrical plunger slides through the seal.

7. Plunger lift - Wikipedia

   en.wikipedia.org/wiki/Plunger_lift

   A plunger lift is an artificial lift method of deliquifying a natural gas well. A plunger is used to remove contaminants from productive natural gas wells, such as water (in liquid, mist, or ice forms), sand, oil and wax.