I have installed a Gas stove and had to run pipe to the kitchen.
I tapped into the existing copper pipe with a copper T. Ran copper to
Black pipe which is what comes out of the floor in the Kitchen for the
Gas Stove to hookup to.
The copper fittings that I put in were soldered using standard plumbing
There have been no leaks and this has been in place a couple of months
now, but I've read somewhere that soldering is only for water and not
What are the problems with soldering for gas pipes? Is this setup
I've soldered, brazed and done some light welding - but I've never worked on
home gas lines other than working with threaded pipe.
If I were in your situation, I'd begin by phoning my local zoning folks and
asking them about code requirements and zoning rules. These folks can be
extremely useful when seeking advise. Just recently I talked with them and got
good advise before I purchased my framing nailer which uses clipped-head nails.
(zoning varies with respect to accepting clipped-head nails).
Obviously, brazing is stronger and not much more difficult.
That for real? About 6 years ago, I had a big underground gas tank
installed by the local gas company and they used copper throughout. Of
course, the lawn guy then promptly ran into the house feed and never told
me. Learned about that one went I went out back and smelled gas... That
installation was an accident waiting to happen...
I worked with a tech for a while that had done HVAC work in SE Minnesota. He
was telling me that some cities he worked in allowed copper for natural gas.
To the point that it was common practice to run hard copper and bazed
fittings, burried in the wall!
Seemed pretty crazy to me, but he assured me it passed code in that area!
Ive seen a ton of it. I also like that gate valve they installed on
them for a shut off. As soon as you turn it, the stem moves and it
starts leaking. I guess they didnt know any better back then.
I've seen copper used for propane. But on NG systems, the furnaces I've
worked on have had aluminum tubing from the gas valve to the pilot.
Speaking for myself, I prefer black iron. If you have black iron and copper
in the cellar, it is very easy to tell w hich is the water, and which is the
Christopher A. Young
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I am in Brazil now and here they use cooper pipe for gas lines in buildings, if to repair a leak, how to do a repair, i hearded you need to run nitrogen gas before solder or brazing because the gas fumes.
Copper *is* permitted in some parts of the country for gas lines.
But soldered (or brazed) joints are not allowed. Only flare-fitting
connections should be used and only soft copper tubing. The reasoning
is that soldered joints can be difficult to make leak-free (and leaks
don't show like they do with water) and the joint may break if the
pipe is subjected to bending/vibration, etc.
NEVER allowed to be soft soldiered. There is a provision to allow for
brazing but you must use a special rod, which I have never been able to find
in over 20 years.
ONLY flare nuts with copper are allowed, compression isn't allowed either.
You are sitting on a bomb just waiting to go off. Fossil fuel gas attacks
copper and causes flaking which can cause a gas valve to stick open. Also,
since it flakes it attacks the copper itself which means that it attacks the
copper that was soldiered, which means the joint constanly get weaker by the
second until the joint fails. With a flare it is less likely to have such a
major leak since it is a mechanical joint, not dependant on a joint like
being 'glued' together.
Change it out, use Stainless steel. Better yet, since you dont know the
codes I would stick to painting and call a plumber to put it in correctly
Your local may or may not allow copper pipes; it depends on what additives
they put in the gas. Mine allows thick walled copper.
No place allows soldering. Some locals allow only flare, some allow flare
or compression. I don't know why; if solder is good enough for high
pressure water it ought to work for low pressure gas, but maybe solder just
isn't stable with gas.
Check with your town; they don't have code requirements for fun.
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