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Solder steel to copper????????

Discussion in 'Plumbing and Central Heating' started by leakydave, 10 Oct 2007.

  1. leakydave

    leakydave

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    Ever seen this before? Called to a leak through ceiling last week... steel pipe (1970's) soldered with copper fittings. Probably been there 30 years, but now leaking. Have a photo but don't know how to upload, sorry?[/img]
     
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  3. Agile

    Agile

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    Its generally considered better to use compression fittings with rubber "O" rings to join these situations.

    Be aware the steel could be only a few microns thick!!!

    Tony
     
  4. chrishutt

    chrishutt

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    Never heard of compression fittings with rubber "O" rings (apart from Leadlocs, etc.). Do you mean those heavy galvanised compression joints designed for normal mild steel tubing? They have rubber olives but they're a V section and look like this.
    [​IMG]
     
  5. Balenza

    Balenza

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    Silver solder is the answer in these situations.
     
  6. Agile

    Agile

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    Yes, Chris, I was using the term "O" rings in a more general sense!

    Tony
     
  7. chrishutt

    chrishutt

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    But I think leakydave is referring to the thin walled steel pipe produced at the time of the copper shortage to the same dimensions as copper tube. It was soldered with copper fittings, but I think the flux had to be different - non-aggressive to steel. The heavy gauge compression fittings above are for normal mild steel tubes which are normally threaded.
     
  8. doitall

    doitall

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    "Bakers Fluid"
     
  9. Strevs

    Strevs

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    Press fit......solves a myriad of problems!
     
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  11. Sylvan Tieger

    Sylvan Tieger

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    When I have to connect copper /brass /bronze to steel I use the union carbide 25 M rod .. It is a bronze rod prefluxed and great for dissimilar metals (no white metals)
     
  12. Agile

    Agile

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    You are in the USA where techniques are different.

    You also seem to have far too much time on your hands so that you have to resort to repling to postings a year old!
     
  13. Softus

    Softus

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    Surely you could just shoot it with an Uzi 9 millimeeeetaar?
     
  14. Sylvan Tieger

    Sylvan Tieger

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    YUP I look for old postings answer them and wait to see how many blokes will answer me saying your answering an old post :)
     
  15. Sylvan Tieger

    Sylvan Tieger

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    Shame how Mr soft died of cancer of the brain BUT It does explain a lot
     
  16. Sylvan Tieger

    Sylvan Tieger

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  17. assured heating

    assured heating

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    Copper and steel are disimaler metals and should not come into contact as you will get electrolytic corrossion which is why it is probably leaking in the first place
     
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