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Stuff Every Plumbing Scout Should Know: the Study Guide

Practice facts for the Plumbing merit badge. Not an official Scouting America credential. Grab a snack: this guide is the friendly version, with the answers explained and a groan-worthy joke waiting at the end of most cards.

Knowing Plumbing Scout saves you money, time and the occasional embarrassment.

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Chapter 1: Solar Systems

What does pipe thread tape help do?

Short answer: Seal threaded pipe joints

Threaded joints are sealed with thread seal tape or pipe dope to prevent leaks.

Groan of the day: Thread tape wraps up leaks neatly.

Sources: Plumbing

What does a pipe cutter do?

Short answer: Cuts pipe to length

A pipe cutter is a specialized tool that cuts pipe cleanly to length.

Groan of the day: A pipe cutter makes the cut every time.

Sources: Plumbing

What is a plumbing fixture?

Short answer: An exchangeable device that uses water

Fixtures are exchangeable devices like sinks and toilets connected to the plumbing system.

Groan of the day: Fixtures are the face of the plumbing system.

Sources: Plumbing

Why might a plumber use a pipe vise?

Short answer: To hold pipe steady while working

A pipe vise is a specialized tool that holds pipe firmly during cutting or threading.

Groan of the day: A pipe vise really holds the fort.

Sources: Plumbing

What does a flaring pliers tool help do?

Short answer: Flare the end of tubing

Flaring pliers are specialized plumbing tools used to flare tubing ends for fittings.

Groan of the day: Flaring pliers give tubing a wider outlook.

Sources: Plumbing

The cheat sheet

The whole guide on one screen. Screenshot it, print it, stick it on the fridge.

  • Plumbing infrastructure is critical to public health and sanitation by delivering safe water and removing waste.
  • Drainage systems carry wastewater away, while vents help the system work properly.
  • Vents let air into drain lines so wastewater can flow smoothly and gases can escape.
  • A trap holds a water seal that stops sewer gases from entering the home.
  • A coupling is a fitting that connects two pipes or tubes together.
  • A tee joins three pipe runs, often branching one line into two directions.
  • An elbow turns a pipe run, usually by 90 degrees or another angle.
  • A nipple is a short pipe section, often threaded, used to join two fittings.
  • A union joins pipes but can be taken apart for repairs without cutting them.
  • A water meter measures the volume of water passing through it, often for billing.
  • Flux cleans the metal and helps solder flow into the joint for a strong bond.
  • Solder is a metal alloy melted at a joint to seal copper pipe connections.

Pop quiz

Think of your answer first, then peek.

  1. Why is a working plumbing system important for a family's health?
    • It keeps drinking water clean and carries waste away
    • It makes faucets run faster
    • It lowers the water bill
    Show the answer

    It keeps drinking water clean and carries waste away. Plumbing infrastructure is critical to public health and sanitation by delivering safe water and removing waste.

  2. What is flux used for when soldering copper pipe?
    • Seals threads on a fitting
    • Helps solder flow and bond to the metal
    • Cools the pipe after heating
    Show the answer

    Helps solder flow and bond to the metal. Flux cleans the metal and helps solder flow into the joint for a strong bond.

  3. Why must plumbing work follow building codes?
    • To make pipes look pretty
    • To raise water pressure
    • To protect health and safety
    Show the answer

    To protect health and safety. Codes protect building inhabitants and ensure safe, quality construction.

  4. What does a plug do in a plumbing fitting?
    • Closes off a pipe opening
    • Joins three pipes
    • Measures flow
    Show the answer

    Closes off a pipe opening. A plug seals or closes an opening in a pipe or fitting.

  5. What is the main difference between a pipe and a tube?
    • Pipe carries gas, tube carries water
    • Pipe is sized by iron pipe size, tube nominally
    • Pipe is always plastic, tube always metal
    Show the answer

    Pipe is sized by iron pipe size, tube nominally. PVC and steel pipe use iron pipe size, while copper and PEX tubing is measured nominally.

Now make it stick

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