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Weld 8” leaking joint?

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Timco
Timco Member Posts: 3,040
in THE MAIN WALL
Piped together a 800k steamer 2 years ago. Now there’s a pretty good leak at a 8” threaded joint. Is there any chance I can just weld this joint? Really can’t unthread it.
Just a guy running some pipes.

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  • Jamie Hall
    Jamie Hall Member Posts: 23,416
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    I couldn't -- but I'll bet you can. Just remember that if you do, it surely isn't going to come apart again...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    1Matthias
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
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    What sort of pressure is this getting up to for it to leak?—NBC
  • 1Matthias
    1Matthias Member Posts: 148
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    Jamie Hall said:

    I couldn't -- but I'll bet you can. Just remember that if you do, it surely isn't going to come apart again...

    Not without a grinder and a whole lot of patience...
  • Timco
    Timco Member Posts: 3,040
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    2psi.
    nicholas bonham-carter said:

    What sort of pressure is this getting up to for it to leak?—NBC

    Just a guy running some pipes.
  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,646
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    I'd weld it. Be sure the fitting is steel and not cast. You can tell by the sparks that come from grinding a bit of it. Steel makes big sparks and iron makes small sparks.
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,646
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    But for that matter, with very low pressure you can probably get away with MIGing the cast.....just dont tell anyone.....😁
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
    1Matthias
  • Henry
    Henry Member Posts: 998
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    That is the reason that we weld anything from 2 1/2 inches.
    Jack
  • Timco
    Timco Member Posts: 3,040
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    Soooooo...wanna guess why it was leaking? They filled the steam system up to the 4th floor....
    Just a guy running some pipes.
    Solid_Fuel_Man
  • Jamie Hall
    Jamie Hall Member Posts: 23,416
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    that'll do it...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
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    Those wet returns will be nice and clean after draining that water out!—NBC
  • Solid_Fuel_Man
    Solid_Fuel_Man Member Posts: 2,646
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    Oh! They thought it was a gravity water system!
    Serving Northern Maine HVAC & Controls. I burn wood, it smells good!
    1Matthias
  • JUGHNE
    JUGHNE Member Posts: 11,074
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    That would have tested your pipe hangers!
  • BenDplumber
    BenDplumber Member Posts: 49
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    Grind/clean e6010 root pass e7018 fill & cap. Gentlemen we are professional. 8" steam piping?? Please call a pipefitter/welder for repair.

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