|Posted by dick on June 22, 19100 at 09:35:22:|
|In response to Re: natural gas line extension|
: I recently purchased a new natural gas grill and I need to extend my current gas line approximately 20 feet. What size copper tubing should I use and what size black iron pipe should I use to connect the quick connect portion of the line?
I used 3/8 od copper 6' long on one 45k btu grill and it worked fine. I recently moved into a house with and replaced the existing grill with a 45k btu grill. The supply was 3/8 copper about 40 feet long. It severly restricted the heat output of the grill. This copper was underground so it is possible that it was crimped also.
I'm not sure about code, but i think running soft copper gas line underground is a very poor practice. Considering the fragile nature and ease of crimping or pinching soft copper, I don't think it's such a great idea to run long lengths of it anywhere that it may be bumped or bent or steped on.
3/8" copper for 20 feet may be ok for your grill depending on the size (BTU) of your grill. If'n it wuz me, I would be inclined to be on the safe side and run 1/2" copper or 1/2" pipe.
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