Gas Fitter Practice · Question
What is the maximum permissible pressure for natural gas in a domestic residential piping system according to CSA B149.1?
CSA B149.1 specifies a maximum natural gas pressure of 0.5 PSIG for domestic residential piping systems to ensure safety.
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Question: What is the maximum permissible pressure for natural gas in a domestic residential piping system according to CSA B149.1?
Answer options:
- 7 inches water column (WC)
- 14 inches water column (WC) ✅ 0.5 PSIG (pounds per square inch gauge)
- 2.0 PSIG (pounds per square inch gauge)
Correct answer: 0.5 PSIG (pounds per square inch gauge)
Explanation: CSA B149.1 specifies a maximum natural gas pressure of 0.5 PSIG for domestic residential piping systems to ensure safety.
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