New Copper Gas Line

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  #1  
Old 06-03-18, 12:51 PM
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New Copper Gas Line

I need to get a copper gas line to the third floor of my house to run a kitchen oven/stove. I have a chase from the 3rd floor to the basement, so I was planning on using 5/8" soft copper.

At the top of the chase, I need to bend it and loop it a bunch of times to get it over/under/around some existing studs/joists/etc. Long story.

I'd prefer to bring the soft copper up, and tie into hard pipe. This way I wouldn't need to string out a bunch of it and try and get it over/under/around things, on my way over to the location of the heater.

This might seem dumb, but I've talked to three people and have received different answers:

Can I solder soft copper to hard copper?

Can I solder soft copper to hard copper, and then solder back into soft copper?

I can't see why not, but a buddy of mine who works at the gas company said no.
 

Last edited by LogiVap; 06-03-18 at 01:25 PM.
  #2  
Old 06-03-18, 12:55 PM
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In many areas copper is not allowed for natural gas.
 
  #3  
Old 06-03-18, 01:24 PM
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It is here. Pretty much the only thing anybody ever uses, new construction and otherwise.
 
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Old 06-03-18, 03:16 PM
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Can I solder soft copper to hard copper?
Can I solder soft copper to hard copper, and then solder back into soft copper?
That's no and no.

You have to use flare fittings on soft copper to convert to a threaded fitting.

As mentioned..... copper is not allowed to be used for gas inside a house in many areas.
It is that way here in NJ. CSST can be used.
 
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Old 06-03-18, 05:37 PM
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Out of curiosity, where is 'here'?

Gas piping seems to continue to be very regional, both the materials and some of the installation quirks.

I've recently become a fan of CSST, though having never gas-piped in copper, I can't say how it compares.
 
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Old 06-03-18, 06:46 PM
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CO....looks like Denver area.
 
  #7  
Old 06-03-18, 06:56 PM
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In MN soft copper is commonly used, however, any joints that will not be accessible are required to be brazed, not just sweated together.

Your better off using soft copper for the main run and converting it to black iron pipe as needed using flair fittings.

CSST is a poor alternative to copper IMO.
 
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Old 06-13-18, 05:59 PM
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Sorry for the delay in responding.

I also live in Minnesota (Hey Tolyn).

I did some other work in the house. Path is a little more clear at this point.

At this point I think I can eliminate most of the turns. In order to avoid pullling a really long piece and bending it several times, I'd like to basically install two sections, then braze them together in the middle. One piece from stove to chase, another piece from basement up to top of chase. Braze together.

Anyone see an issue with that?

Thanks again. Really appreciate the help.
 
 

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