Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

swing joint

Mike Mumma
Mike Mumma Member Posts: 12
in THE MAIN WALL
What you describe can be seen on/as a down-fed header?

Comments

  • Mike Mumma
    Mike Mumma Member Posts: 12
    swing joint

    I know what a swing joint does. What does it look like? I went through the steam pipe pics and if I saw one, I don't know it.
  • Paul Fredricks_3
    Paul Fredricks_3 Member Posts: 1,557


    It's 2 90 degree elbows joined together. they could make the shape of an "S" or can be swiveled other ways. Normally a pipe going up into a 90, then another 90 attached to it, then the next pipe running horizontally.

    Wish I had a picture.
  • Brad White_9
    Brad White_9 Member Posts: 2,440
    Swing Joints

    Quick Sketch-

    The bottom one shows the swing joint in more detail. It is a field-fabricated arrangement as opposed to a purchased item.
  • Mike Mumma
    Mike Mumma Member Posts: 12
    swing joint

    Got it! Thanks guys!!
  • Weezbo
    Weezbo Member Posts: 6,232
    there are a couple swing joints :)

    the idea is basically to allow expansion and contraction stress...
    in a way you can think of them as shock absorbers....
  • Mike Mumma
    Mike Mumma Member Posts: 12
    12\" min. on eq.

    Brad, in your diagram, you show the equilizer with a 90* ell in it. In the drawing you state 12" minimum between the two pipe leading to and away from the 90*. Why is this important?
  • Brad White_9
    Brad White_9 Member Posts: 2,440
    Not the same thing, Mike

    The detail focus is the swing joint itself and that which I illustrated is the main branch leaving the header. The end-of-main drop certainly could be a swing joint but I would think the extra fittings may make some installations more difficult and turbulent than they would need to be.

    The end of the header is just for illustration but should be thought of as a "header-size x 1-1/2" minimum" reducing elbow turned to a 45 drop. I have seen that in photos posted on the site and like how it looks. Not a perfect illustration, I freely admit!

    The reason for the 12" minimum is, if less, there is less "give" or flexion in the joint. You definitely go longer....

    Picture if you will, if the joints were made with close-nipples or short nipples... the assembly would not flex too well, would it? Expand the minimum distance to 24 inches, 36 inches, what have you. You can then see how that much more pipe would flex far better.

    Think of swing joints as hairpins.

    The equal leg length is to assure that one will not over-leverage the other. It also allows movement in the X, Y and Z axis.
  • Mike Mumma
    Mike Mumma Member Posts: 12
    Understood

    Thanks!!!
This discussion has been closed.

Categories