"Existential Angst" wrote in message
...
Awl -

I'm doing some demo on my 50's kitchen, which was done pretty well,
overall -- 3/4 black pipe to a 6 burner stove, etc.
Except, they tee'd off underneath for the gas line to the oven, using 1/2
or 5/8" copper, flare fitting.

I've been told copper gets brittle with natural gas, and is therefore
against many codes. Is this accurate? Is this a recent discovery? Seems
odd that the original installers would use 3/4" black pipe, and then wimp
out at the end.

Are there similar restrictions with copper and propane? Other gases?
If this restriction is only with nat gas, I assume it's because of the
sulfer additive (smell) that reacts with the copper.

tia
--
EA


When I moved a park model mobile home from Wisconsin where it had been run
on propane to Mesa, AZ where it was to be hooked up to natural gas, the city
refused to allow the hook up due to copper tubing being used for the gas
lines. My contractor said he thought the city was wrong and he pointed out
to them that their codes allowed copper tubing if the tubing had a certain
manufacturing code letter (which I don't remember). I had to call the
manufacturer back East to find out where on the copper I could find that
code and then point it and the code regulations out to the inspector from
the city and then it was approved. As I remember it, the copper had to be a
certain alloy to prevent pinhole leaks from forming from the natural gas.

Tom G.