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Is this an acceptable technique for building boilers?

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Is this an acceptable technique for building boilers?

Home › Forums › General Questions › Is this an acceptable technique for building boilers?

Viewing 7 posts - 1 through 7 (of 7 total)
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  • 20 February 2018 at 19:54 #25823
    Dave Jones 1
    Participant
      @davejones1
      20 February 2018 at 19:54 #342490
      Dave Jones 1
      Participant
        @davejones1

        After looking at a couple of older LBSC boiler designs that call for a rolled boiler shell and a butt strap fitted along the base of the tube, I did wonder if it would be easier and quicker to split the end of a copper tube and form the firebox sides. The problem was that with boilers such as juliet, the firebox would not be large enough. I have come across a boiler on ebay that appears to have been a cut tube with an extra copper plate that has been attached with a butt strap to create a longer firebox.

        Whilst I have no interest in the boiler on ebay, is this method acceptable by modern standards as I have no come across this before.

        P.S. Apologies for the incorrect terminology!!!capture.jpg

        Edited By Dave Jones 1 on 20/02/2018 19:54:55

        20 February 2018 at 19:59 #342491
        JasonB
        Moderator
          @jasonb

          Yes that is acceptable provided the joint is made properly.

          Some people split the barrel and fold down an equal amount both sides to extend, others fold it all out on one side which often gives enough length to reach the foundation ring and then join a larger piece to the other shorter side which means one less joint to make

          20 February 2018 at 20:07 #342494
          Dave Jones 1
          Participant
            @davejones1

            Thanks for that, I will probably use this method when/if I finally begin my Juliet boiler.

            20 February 2018 at 20:25 #342498
            JasonB
            Moderator
              @jasonb

              Do check with your boiler inspector first before deviating from any methods shown on your drawings.

              20 February 2018 at 21:21 #342503
              Paul Lousick
              Participant
                @paullousick59116

                Best to check with your boiler inspector but I believe that a butt joint on a copper boiler should have a backing strip over (or behind) the joint if it is solderred. Or use an overlapping joint between the 2 plates.

                Paul.

                21 February 2018 at 07:23 #342536
                JasonB
                Moderator
                  @jasonb

                  The one in the photo does have rivits along each side of the joint so reasonable to assume they are going into a butt strip. External is prefered now as it is easier to see how well the solder has flowed into the joint.

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