Gas Fitter Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Study for the Gas Fitter Test. Enhance your knowledge with flashcards and multiple-choice questions, each accompanied by hints and explanations. 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.

What is the setting for the relief valve in a low pressure hot water system?

14.7 psia
15 psig
30 psia
30 psig

The correct answer is: 30 psig

The setting for the relief valve in a low-pressure hot water system is typically specified to ensure safety and proper functioning of the system. In this case, 30 psig (pounds per square inch gauge) is the correct setting. This means that the relief valve will open to relieve pressure when the system reaches 30 psi above atmospheric pressure, which is critical for preventing potential over-pressurization that could lead to tank failure or other hazards. Using a gauge measurement like psig is important as it accounts for atmospheric pressure, allowing for direct assessment of the system's internal pressure. In low-pressure hot water systems, maintaining the correct relief valve setting is crucial as it helps to protect the system's components from being subjected to excessive pressures, ensuring both safety and operational integrity. The other pressure settings listed (14.7 psia, 30 psia, and 15 psig) do not align with the standard relief valve setting for low-pressure hot water systems, which is why they are not applicable.