Copper piping for Natural gas?

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1

Originally Posted By: kmcmahon
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Can copper piping be used for natural gas supply?

–
Wisconsin Home Inspection, ABC Home Inspection LLC


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2

Originally Posted By: jschwartz1
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Kevin:


The answer is no. Gas is odorless, so a chemical is added to it. This chemical reacts to copper causing corrosion. Galvanized pipe is required for gas.

--
Jay Schwartz
Coast To Coast Home Services, Inc
www.Coasttocoasthomeservices.com
Southeast Florida NACHI Chapter - VP www.floridanachi.org
NACHI - Legislative Committee Member
MAB - Member

3

Originally Posted By: kmcmahon
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That’s what I thought…but seeing this on fairly new construction (7 years) with copper piping from the gas meter to the furnace got me questioning myself.


Thanks.


Kevin

--
Wisconsin Home Inspection, ABC Home Inspection LLC

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4

Originally Posted By: jschwartz1
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Kevin:


Check the label on the copper. It is possible there may be a special coating on the inside of the pipe.

--
Jay Schwartz
Coast To Coast Home Services, Inc
www.Coasttocoasthomeservices.com
Southeast Florida NACHI Chapter - VP www.floridanachi.org
NACHI - Legislative Committee Member
MAB - Member

5

Originally Posted By: jschwartz1
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Kevin:


Here is some info:

http://www.finishing.com/132/77.shtml

--
Jay Schwartz
Coast To Coast Home Services, Inc
www.Coasttocoasthomeservices.com
Southeast Florida NACHI Chapter - VP www.floridanachi.org
NACHI - Legislative Committee Member
MAB - Member

6

Originally Posted By: bkelly2
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Check your local codes or try the link and look at 2.6.8


http://www.aga.org/Content/NavigationMenu/Operations_and_Engineering/Codes_and_Standards1/National_Fuel_Gas_Code/Piping.pdf

Let us know what you find in your area. To much sulphur in the gas here for copper.

7

Originally Posted By: wcottrell
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The gas codes use to allow copper or brass tubing if the hydrogen sulfide was less than 0.3 grains per 100 standard cubic feet of gas, then if the concentration of hydrogen sulfide was higher one must use tin lined copper tubing. Again AHJ is always the determining factor.


Regards Bill

8

Originally Posted By: gbeaumont
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Hi to all,


Copper is suitable for gas supply line as long as it is type "K" piping which has a thicker wall that that used for plumbing and heating, it will be marked with its type printed in green on the tube but it is often difficult to read the labeling.

![](upload://dIL9NwoniqS0eeUi6AumNTBViuF.jpeg)
Picture (C) Inspection Depot, from the home guide Illustrations.

I hope this helps

Regards

Gerry

--
Gerry Beaumont
NACHI Education Committee
e-mail : education@nachi.org
NACHI phone 484-429-5466

Inspection Depot Education
gbeaumont@inspectiondepot.com

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9

Originally Posted By: bkelly2
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Try this


http://www.copper.org/applications/fuelgas/homepage.html

or this

http://www.copper.org/about/pressreleases/2000/PlumbingandMechanical.html

Plunbing question?

Gerry, I am sure you meant copper tube.

10

Originally Posted By: dbowers
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You need to check your local codes. We were using copper in Dallas in the late 70’s for the last 3’ or so of gas lines to furnaces or water heaters, etc. In Kansas City they used it on fireplace gas supply lines for the last 3’ or so before it joined up with black iron and entered the masonry firebox, up till just a few years ago. I’ve seen it installed in new construction as a connector (3’ line) between black iron and a furnace or a water heater in Asheville, NC just last year. Its used very commonly throughout the midwest for Propane Gas (LPG Tanks).


Some areas have never allowed it - BUT - the building codes and fuel gas codes permit the use of copper for gas under certain conditions (most of which are never/ever met). So to be 100% accurate don't tell people on our board its not allowed - it is. Maybe not in your town, but ........

11

Originally Posted By: Monte Lunde
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Jay


The statement " Galvanized pipe is required for gas." I have never seen Galvanized pipe used for a gas line. All I have ever see is black pipe and/ or Type K copper, but maybe in your neck of the woods Galvanized is being required instead of a choice of either Galvanized Pipe, Black Pipe or Type K Copper. I know Galvanized pipe is allowed but not in our neck of the woods (Supplier's requirements)

--
Monte Lunde CCI, CCPM, CRI
Viking Construction Services Inc.