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  1. #1
    Join Date
    Dec 2005
    Location
    Dallas, TX area
    Posts
    267

    Default How would you fix this leak?

    The headquarters of a big name retailer called us Friday. A 14" condenser water line had sprung a leak and needed to be welded. No problem, huh? There was one tiny little challenge to it. The pumps pushing water through this line at right about 45 PSI couldn't be shut off and the repair had to be made while the pipe was pressurized. We finally got it stopped. What a pain. The operators said they couldn't shut the pumps off, even for five minutes until Monday. And, they wanted the leak fixed last night. Fortunately they said those magic words "Whatever it costs". Yep, I'm a happy guy today. I think I'll go pick up that new Spectrum 375-X with my whatever-it-costs money.
    Triggerman

    Ammonia refrigeration tech
    Trailblazer 302 (yes, it's new)
    Millermatic 180 w/Autoset
    CST-250
    HF-15 High frequency
    XR15 w/Push-Pull Gun
    Victor O/A, DeWalt, North mask


    "A professional knows what to do. A craftsman knows why."

  2. #2
    Join Date
    Mar 2007
    Posts
    356

    Default

    piece of pipe with same id as od of broken pipe, a piece of tar paper where the pinhole was, clamp the ***** on real tight, and weld the outside edges
    mm210
    maxstar 150

  3. #3
    Join Date
    Mar 2007
    Location
    Vero Beach, fl.
    Posts
    761

    Default How would I fix this?

    I used to work in the citrus and vegetable processing industry for many years and did quite a bit of work in juice manufacturing plants. When ever we had a leak to contend with what we would do is get a piece of pipe that was the same i.d. as the o.d. of the leaky pipe, we would take it and cut it into two pieces and place a piece of gasket material under it and fasten it temporarily with hose clamps. That usually worked until they could shut down and proper repair could be made. The juice plants are all stainless tubing that had to be purged with argon for a sanitary welds. The pasterizing lines were always fun as they contained seven tubes inside the larger tube, the small lines carried the juice and the larger tube chilled it with glycol. The glycol lines were pressurized sometimes up to 2500 p.s.i. Dave
    If necessity is the Mother of Invention, I must be the Father of Desperation!

    John Blewett III 10-22-73 to 8-16-07
    Another racing great gone but not to be forgotten.http://video.google.com/videoplay?do...modified&hl=en

  4. #4
    Join Date
    Mar 2007
    Location
    Oahu, Hawaii
    Posts
    2,469

    Default

    Dave,
    How would you tighten down the "new" collars you made over the gasket material? I've seen plumbers use big hose clamps over gasket material/rubber, but if you use pieces of pipe, how could you cinch it down tight?
    bert
    I'm not late...
    I'm just on Hawaiian Time

  5. #5
    Join Date
    Mar 2007
    Location
    Vero Beach, fl.
    Posts
    761

    Default Bert

    By placing a thin piece of gasket material over the leak, you then take a piece of tubing and cut in half or thirds whatever it takes to cover the area. Place the hose clamps around the patch panel and the pressure of the patch panel in turn puts pressure on the gasket material which then in theory stops the leak until proper repair can be made. All the piping in the juice plants are thin walled stainless and the patch will easily conform to the thickness of the gasket material . This method may not work as well with heavy gauge piping, but it wasn't stated what type of metal or the wall thickness was on the leaking pipe. Most of our repairs were made on 14 and 11 gauge stainless tubing and in most cases the i.d. was 8" or less. We have also used a stainless patch that is like a large hose clamp with rubber lining already on it but we didn't have much luck with those as they seemed to slow the leak instead of stopping it. Let me know if you are still unsure about what I'm talking about as I can say it better than I can type it. Dave
    If necessity is the Mother of Invention, I must be the Father of Desperation!

    John Blewett III 10-22-73 to 8-16-07
    Another racing great gone but not to be forgotten.http://video.google.com/videoplay?do...modified&hl=en

  6. #6
    Join Date
    Mar 2007
    Location
    Oahu, Hawaii
    Posts
    2,469

    Default

    Thanks Dave,
    now THAT makes a lot more sense
    I'm not late...
    I'm just on Hawaiian Time

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