Plumbing Book Module 11 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified

Plumbing Book Module 11 Questions and Answers | Latest Version | 2024/2025 | Correct & Verified What is the main function of a trap in a plumbing system? To prevent sewer gases from entering the building by holding water in the bend. Why should plumbers always check water pressure before starting a project? To ensure the pressure is within the required range for safe and efficient operation. What does the term "backflow" refer to in plumbing? The unintended reverse flow of water, often contaminated, into the clean water supply. Why is it important to properly slope drainpipes? To allow wastewater to flow efficiently without causing blockages. What is the role of a vent pipe in a plumbing system? To allow air into the system, preventing vacuum formation and ensuring proper drainage. 2 How do you test a plumbing system for leaks? By pressurizing the system and checking for a drop in pressure or visible leaks. What material is commonly used for residential water supply pipes? Copper, PVC, or PEX, depending on the application and local regulations. Why is it crucial to use pipe insulation in cold climates? To prevent pipes from freezing and causing potential burst pipes. What is the function of a sump pump in a plumbing system? To remove water from basements or other low areas and prevent flooding. Why should plumbers use the correct fittings and connectors for each pipe material? To ensure leak-free connections and maintain system integrity. What is the recommended method for cutting copper pipes? Using a pipe cutter to create clean, straight cuts without damaging the pipe. 3 What does the term “drainage waste and vent” (DWV) refer to? A system designed to carry wastewater and sewage away from the building while ensuring proper venting. How can you prevent clogs in a drainpipe system? By installing proper traps and ensuring the system is correctly sloped and free from debris. What is the purpose of a hose bibb on an outdoor plumbing system? To provide an outdoor faucet for water access, commonly used for irrigation or cleaning. What does "cross-connection" mean in plumbing? A direct connection between potable water and a non-potable source, posing a contamination risk. Why is it important to have a cleanout in the plumbing system? To provide access for clearing clogs or performing maintenance in drain lines. What is the primary purpose of a pressure reducing valve in a plumbing system? 4 To lower high incoming water pressure to a safe