Gas Fitter Practice · Question
What is the purpose of an excess flow valve on a propane supply line?
An excess flow valve is a safety device that restricts or shuts off the flow of gas if it exceeds a predetermined rate, indicating a leak or rupture.
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Question: What is the purpose of an excess flow valve on a propane supply line?
Answer options:
- To regulate gas pressure to the appliance
- To prevent overfilling of the propane tank ✅ To automatically shut off gas flow if a line ruptures
- To filter impurities from the propane
Correct answer: To automatically shut off gas flow if a line ruptures
Explanation: An excess flow valve is a safety device that restricts or shuts off the flow of gas if it exceeds a predetermined rate, indicating a leak or rupture.
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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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