Gas Fitter Practice · Question
What type of piping material is typically NOT permitted for underground natural gas lines in residential applications?
Copper tubing is generally not permitted for underground gas lines due to its susceptibility to corrosion in soil conditions.
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Question: What type of piping material is typically NOT permitted for underground natural gas lines in residential applications?
Answer options:
- Polyethylene (PE)
- Steel pipe ✅ Copper tubing
- Black iron pipe
Correct answer: Copper tubing
Explanation: Copper tubing is generally not permitted for underground gas lines due to its susceptibility to corrosion in soil conditions.
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- What is the maximum allowed pressure for a propane system supplying a residential appliance?
- When installing a gas outdoor appliance, what is the minimum required clearance from an opening into a buildin
- Which code specifies the requirements for the installation of propane-burning appliances and equipment?
- What is the maximum allowed pressure drop for gas piping within a building, from the point of delivery to the
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