Red Seal Plumbing Exam 2025 – 400 Free Practice Questions to Pass the Test

Question: 1 / 400

What piping arrangement ensures that domestic hot water is readily available to a plumbing fixture?

Expansion tank installation

Recirculation line on the water system

A. Expansion tank installation is not the correct option because it is primarily used to absorb excess pressure in the water system, not to ensure the availability of hot water at a plumbing fixture.

C. Isolation valves installation is not the correct option because it is used to isolate or shut off a specific section of the plumbing system, but it does not ensure the availability of hot water.

D. Anti-scald valve setup is not the correct option because it is used to regulate the temperature of hot water to prevent scalding, but it does not directly ensure the availability of hot water.

The correct option is B Recirculation line on the water system. This arrangement involves a dedicated line that keeps hot water constantly circulating through the pipes, allowing for quick access to hot water at the fixtures.

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Isolation valves installation

Anti-scald valve setup

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