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Copper and brass tubing should not be used if the gas contains more than an average of 0.3 grains of hydrogen sulfide per 100 standard cubic feet of gas (0.7 milligrams per 100 liters).
Please provide your resource for this information. If the gas contains more than an average 0.3, then WHY should copper and brass not be used?
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is risk to persons or property worth it? if copper works forever, the gas companies would USE it for their mains, not polyethylene.
Several different materials are approved for gas work, e.g., copper, PE, PVC, etc. (
http://www.engineeringtoolbox.com/approved-gas-pipes-d_1112.html) However, I didn't see black iron pipe on that website (maybe when they mention ductile iron, they're including black iron?)
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I'll probably use plastic underground and black iron above ground.
Also, I'm pretty sure copper and plastic don't break too easily, especially if they're kept out of the way of backhoes, aerators, etc.
I'm not trying to imply that safety is not #1 for all projects, but hiring a gas company to do the work (for me) is out of the question cuz I can do it myself to save money. As long as my local utilities and regional bulding department approve the work, then my plumbing is safe, legal, and covered by my homeowner's insurance.