What is a coupling used for in plumbing?

Joining two lengths of pipe.

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  1. Measuring water flow
  2. Joining two lengths of pipe ✔
  3. Cutting pipe to length

Why: A coupling is a fitting that connects two pipes or tubes together.

Huh, didn't know that: A coupling is a fitting that connects two pipes or tubes together.

The dad joke
A coupling is good at making connections.
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References

Answer: Joining two lengths of pipe. A coupling is a fitting that connects two pipes or tubes together.

  1. Scouting America: Plumbing www.scouting.org/merit-badges/plumbing
    solvent weld at least three connections to include a coupling, tee, and elbow
    Checked 2026-11-07.

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