Gas Fitter Practice · Question
Which of the following materials is generally NOT permitted for underground natural gas piping installations?
PVC is not approved for natural gas piping, especially underground, due to its susceptibility to degradation and inability to withstand gas pressure and potenti
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Question: Which of the following materials is generally NOT permitted for underground natural gas piping installations?
Answer options:
- Polyethylene (PE)
- Steel (coated)
- Copper tubing ✅ PVC (Polyvinyl Chloride)
Correct answer: PVC (Polyvinyl Chloride)
Explanation: PVC is not approved for natural gas piping, especially underground, due to its susceptibility to degradation and inability to withstand gas pressure and potential damage.
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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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