National Home Inspector Practice Exam

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Study for the National Home Inspector Exam. Explore comprehensive questions with detailed explanations. Prepare effectively and ace your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Which plumbing fixture valves should not be operated?

Shut-off valves
Hose bibbs
Sink faucets
Showers and tubs

The correct answer is: Shut-off valves

Shut-off valves are specifically designed to control the flow of water to fixtures or sections of plumbing systems. While they can be operated to stop or start water flow during maintenance or repairs, they should not be operated frequently or unnecessarily. This is because frequent operation can lead to wear and tear, potentially causing leaks or failures over time. In contrast, hose bibbs, sink faucets, and shower/tub fixtures are intended for regular use in daily activities. They are designed for frequent operation and are built to withstand such regular use without the same risk of failure as shut-off valves. Therefore, the emphasis on shut-off valves highlights their intended purpose in the plumbing system, making it crucial to limit their operation to avoid premature deterioration.