What is a nipple in plumbing terms?

A short length of pipe connecting two fittings.

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  1. A cap that closes a drain
  2. A short length of pipe connecting two fittings ✔
  3. A small valve on a faucet

Why: A nipple is a short pipe section, often threaded, used to join two fittings.

Huh, didn't know that: A nipple is a short pipe section, often threaded, used to join two fittings.

The dad joke
A nipple is short but makes a big connection.
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References

Answer: A short length of pipe connecting two fittings. A nipple is a short pipe section, often threaded, used to join two fittings.

  1. Scouting America: Plumbing www.scouting.org/merit-badges/plumbing
    Identify and explain the following terms: washer, retaining nut, plunger (rubber force cup), solder, flux, elbow, tee, nipple, coupling, plug, union, trap
    Checked 2026-11-07.

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