Plumbing Parts Quiz

Name:

Date:

Instructions: How well do you know plumbing parts and fixtures? Test your knowledge of pipes, fittings, and plumbing basics.

1.
What is the curved pipe under a sink called that traps water to prevent sewer gases from entering the home?
A
Coupling
B
Tee fitting
C
P-trap
D
Elbow joint
2.
Which plumbing fitting connects two pipes at a 90-degree angle?
A
Union
B
Tee
C
Coupling
D
Elbow
3.
What is a ball valve used for in plumbing?
A
Filtering water
B
Heating water
C
Controlling water flow with a quarter-turn handle
D
Measuring water pressure
4.
Which plumbing tool is a long, flexible metal cable used to clear clogs deep in drain pipes?
A
Pipe wrench
B
Drain snake (auger)
C
Basin wrench
D
Plunger
5.
What is the flapper in a toilet tank?
A
The overflow tube
B
The handle that activates flushing
C
A rubber seal that lifts to release water into the bowl when flushing
D
The float that controls water level
6.
Which type of pipe material, colored blue or red, is flexible and commonly used in modern residential water supply lines?
A
PEX (cross-linked polyethylene)
B
Galvanized steel
C
Copper
D
Cast iron
7.
What is a T-fitting (tee) used for in plumbing?
A
Creating a watertight seal
B
Connecting pipes at a T-shaped junction to split or combine flow
C
Connecting pipes of different materials
D
Reducing pipe diameter
8.
Which device is installed in a water heater to prevent excessive pressure buildup?
A
Temperature and pressure relief valve (T&P valve)
B
Gate valve
C
Check valve
D
Backflow preventer
9.
What is a coupling used for in plumbing?
A
Capping off a pipe end
B
Changing the direction of a pipe
C
Joining two straight pieces of pipe together
D
Reducing pipe size
10.
Which plumbing fixture is a low-mounted basin used for personal hygiene, common in European bathrooms?
A
Footbath
B
Urinal
C
Bidet
D
Sitz bath
11.
What is the purpose of a shut-off valve (stop valve) located near a fixture?
A
Regulating water temperature
B
Filtering sediment
C
Allowing you to turn off water supply to a specific fixture for repairs
D
Boosting water pressure
12.
Which plumbing component prevents water from flowing backward into the clean water supply?
A
Gate valve
B
Pressure regulator
C
Backflow preventer (check valve)
D
Water meter
13.
What is a reducer fitting used for?
A
Filtering debris
B
Measuring flow rate
C
Connecting two pipes of different diameters
D
Increasing water pressure
14.
Which material is the traditional choice for drain, waste, and vent pipes in older homes?
A
Cast iron
B
Copper
C
PVC
D
PEX
15.
What is a basin wrench specifically designed for?
A
Tightening pipe unions
B
Removing toilet bolts
C
Cutting copper pipe
D
Reaching and tightening faucet mounting nuts in tight spaces under sinks

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