Plumbing Book Module 12 Questions
and Answers | Latest Version | 2024/2025
| Correct & Verified
What is the primary purpose of a plumbing vent system?
✔✔ To allow air to enter the plumbing system, preventing vacuum and allowing water to flow
freely.
Why should plumbing pipes be properly supported?
✔✔ To prevent sagging, misalignment, and potential damage.
What is the standard size of a residential waste pipe?
✔✔ Typically 4 inches in diameter.
Why is it important to check for leaks after installing plumbing systems?
✔✔ To ensure that the system is airtight and watertight, preventing water damage and wasted
resources.
What is the function of a trap in a plumbing system?
1
, ✔✔ To prevent sewer gases from entering the home while allowing wastewater to flow through.
Why should you always use pipe insulation in cold climates?
✔✔ To prevent pipes from freezing and potentially bursting during cold weather.
How does a water heater’s anode rod work?
✔✔ It helps prevent corrosion by attracting corrosive elements in the water, prolonging the
heater’s lifespan.
What type of pipe is commonly used for water distribution in homes?
✔✔ Copper and PEX are commonly used for residential water supply lines.
What is the purpose of a backflow preventer in a plumbing system?
✔✔ To prevent contaminated water from flowing back into the clean water supply.
Why is it important to know local plumbing codes?
✔✔ To ensure installations meet legal standards and are safe for use.
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and Answers | Latest Version | 2024/2025
| Correct & Verified
What is the primary purpose of a plumbing vent system?
✔✔ To allow air to enter the plumbing system, preventing vacuum and allowing water to flow
freely.
Why should plumbing pipes be properly supported?
✔✔ To prevent sagging, misalignment, and potential damage.
What is the standard size of a residential waste pipe?
✔✔ Typically 4 inches in diameter.
Why is it important to check for leaks after installing plumbing systems?
✔✔ To ensure that the system is airtight and watertight, preventing water damage and wasted
resources.
What is the function of a trap in a plumbing system?
1
, ✔✔ To prevent sewer gases from entering the home while allowing wastewater to flow through.
Why should you always use pipe insulation in cold climates?
✔✔ To prevent pipes from freezing and potentially bursting during cold weather.
How does a water heater’s anode rod work?
✔✔ It helps prevent corrosion by attracting corrosive elements in the water, prolonging the
heater’s lifespan.
What type of pipe is commonly used for water distribution in homes?
✔✔ Copper and PEX are commonly used for residential water supply lines.
What is the purpose of a backflow preventer in a plumbing system?
✔✔ To prevent contaminated water from flowing back into the clean water supply.
Why is it important to know local plumbing codes?
✔✔ To ensure installations meet legal standards and are safe for use.
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