General
What is the main purpose of a P-trap in a plumbing system?
To prevent sewer gases from entering the home by trapping water in a curved pipe section.
Copper pipe with the thickest wall
Type K
What tool is commonly used to clear a clogged drain?
A plunger or a drain snake (auger).
Straight copper comes in two lengths
10' and 20'
What is a common nickname for a plumber?
Pipefitter
50/50 Solder is made of
50% tin, 50% Lead
Copper Pipe color coded red
Type M
What is the name of the tool used to cut PVC pipe?
A PVC pipe cutter or a hacksaw.
Type of copper used in underground residential work
Type K
Which part of the human body did ancient Roman engineers use to measure the flow rate of water?
The thumb; they would use their thumb to estimate flow rates and pipe sizes.
What does the term "sweating" refer to in plumbing?
The process of soldering copper pipes and fittings together.
What does DWV mean?
Drain, Waste, Vent
What type of wrench is often used for tightening or loosening pipe fittings?
A pipe wrench.
What is the purpose of a backflow preventer in a plumbing system?
To prevent contaminated water from flowing back into the clean water supply.
What plumbing fixture is commonly referred to as the "throne"?
The toilet.
What is the standard size of a residential toilet drain pipe?
3 inches in diameter.
Light wall copper pipe
Type M
What is the term for the angle at which a drain pipe must be installed to ensure proper flow and prevent blockages?
Slope or pitch (typically 1/4 inch per foot).
Prevents over pressurizing in hydronic systems
Pressure relief valve
Who is the mascot character for a famous video game series known for being a plumber?
Mario from the Super Mario series.
What does the acronym PEX stand for in plumbing?
Cross-Linked Polyethylene.
DWV Copper is color coded as
Yellow
What is the minimum height required for a vent stack above the roofline according to most plumbing codes?
6 inches
Soldering is done at temperatures below
800F
Which ancient civilization is credited with developing the first known plumbing systems?
The Indus Valley Civilization