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pressure testing a house gas line ? Tim 04-24-2008
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Posted by Tim on April 24, 2008, 8:00 pm
I am going to add a short run from my main inside gas line to service a new
cooktop. It will only be about a 10 ft run...the service line is in the
ceiling a little over from the range location. Question is...do you
normally test the new line from the meter to the rest of the system...and
what is the normal pressure in an inside gas line (black pipe
throughout)...looks linke am 1" or 1 1/4" run ?

I used to work for the gas company in Chicago a long time ago when I was out
of school for awhile...we laid...welded...and tested hundreds of 2" lines in
the time I was there. I would rather pressure test than use the old soapy
bubble test.

Any additional help/guidance will be appreciated.

TR



Posted by Nate Nagel on April 24, 2008, 8:03 pm
Tim wrote:
> I am going to add a short run from my main inside gas line to service a new
> cooktop. It will only be about a 10 ft run...the service line is in the
> ceiling a little over from the range location. Question is...do you
> normally test the new line from the meter to the rest of the system...and
> what is the normal pressure in an inside gas line (black pipe
> throughout)...looks linke am 1" or 1 1/4" run ?
>
> I used to work for the gas company in Chicago a long time ago when I was out
> of school for awhile...we laid...welded...and tested hundreds of 2" lines in
> the time I was there. I would rather pressure test than use the old soapy
> bubble test.
>
> Any additional help/guidance will be appreciated.
>
> TR
>

normal gas line pressure is only a couple psi.

nate


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Posted by Edwin Pawlowski on April 24, 2008, 10:23 pm

>
> normal gas line pressure is only a couple psi.
>
> nate
>

But the normal test by code is much higher. The uniform plumbing code is 10
psi for 15 minutes, IIRC.



Posted by Sac Dave on April 24, 2008, 10:45 pm

>
>>
>> normal gas line pressure is only a couple psi.
>>
>> nate
>>
>
> But the normal test by code is much higher. The uniform plumbing code is
> 10 psi for 15 minutes, IIRC.
>

Your starting to see a 24 Hour craft test on gas lines and of coarse the
inspector puts his lock on the craft box. . This is in commercial work , but
I'm sure it will gravitate into housing.



Posted by John Gilmer on April 24, 2008, 11:24 pm


>
> normal gas line pressure is only a couple psi.

If that!

Gas pressure is usually measured in "Inches of Water."

30' of water is about 15 psi. 1 psi is about 2' or 24" of water.

>


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