Questionable Stainless Tube Bend
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  1. #1
    Join Date
    Dec 2005
    Location
    Ohio
    Posts
    42

    Questionable Stainless Tube Bend

    CRCoil.pdf

    We are in a time crunch and need the above part. Do you think this stainless steel having a ripple in it be acceptable for installation? It will be on the suction accumulator or low pressure side. Its O.D. is 0.75" and its I.D. is 0.671". The bend is 90 degrees.

    Thanks for your input, Andreas

  2. #2
    Join Date
    Dec 2005
    Location
    Ohio
    Posts
    42

    The correct attachment

    I apologize for putting the wrong attachment to my previous email. This is the correct one.

    Name:  284984.jpg
Views: 60
Size:  29.6 KB

  3. #3
    Join Date
    Dec 2005
    Location
    Ohio
    Posts
    42

    Application

    It is used in railway HVACs

  4. #4
    Join Date
    Aug 2006
    Location
    Vancouver , Canada
    Posts
    297

    Stainless

    I work at a pulp and paper mill where there is lots of stainless steel ( 316 ) of every description.

    The photo does not look like there is any sharp ripples - I use lots of stainless tubing on water and drain lines and on that diameter of tube, ripples are common. But, why do you have to use a rippled piece? Make another one in a 3/4 inch bender, but oil up the tube and bender forming sections. That MAY help.

    If you have to use that particular piece, and there is concern of integrity issues down the road, build up some silver braze ( Easy-Flo 45 ) on the affected area to strengthen it, or if you wish, silver bearing soft solder ( Sta-brite 5% or 8% ) in the same fashion - if you use soft solder, you will have to use an acid based liquid flux made for that purpose. I have done this with copper with excellent results, but you don't run into stainless too often.

    Stainless is very finicky, you can overheat and spot burn it easily if the flame is too intense - then nothing will stick. It is great stuff, but it is horrible to work with in many ways. Good luck.
    Superheat and subcooling tell it all !

  5. #5
    Join Date
    Dec 2005
    Location
    Ohio
    Posts
    42

    Thanks

    Thanks for the information. Because we are in a pinch and the vendor cannot turn something around quickly enough, we will use the three pieces. Have a good day!

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