Originally Posted By: dhartke
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A couple days ago I was talking to a friend who has worked at the local municipal gas department for many years. He told me copper tubing was not allowed for propane or natural gas anywhere in his jurisdiction and whenever it was found during a city inspection it would be removed and replaced with black iron pipe and flexible stainless steel tubing as needed. They have been enforcing this rule so long he couldn’t remember the origin, possibly a reaction between copper and gas.
Does anybody have an explanation or a link that would explain this?