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Hartford loop

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pipers
pipers Member Posts: 21
edited October 2021 in Strictly Steam
Why do we use a close nipple out of the tee on the Hartford loop

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  • EdTheHeaterMan
    EdTheHeaterMan Member Posts: 8,022
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    You want the least amount of pressure drop. Some old drawings actually use a Y fitting instead of a tee.

    Edward Young Retired

    After you make that expensive repair and you still have the same problem, What will you check next?

  • delcrossv
    delcrossv Member Posts: 748
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    You want the least amount of pressure drop. Some old drawings actually use a Y fitting instead of a tee.

    Wye takeoff down to the wet returns?
    Trying to squeeze the best out of a Weil-McLain JB-5 running a 1912 1 pipe system.
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 15,605
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    @pipers

    In a Hartford loop you have condensate coming up a vertical return, crossing over the close nipple and going back down into the boiler. The equalizer on top has steam in it. The water and steam meet in the Hartford loop. A short (close) nipple or a Y fitting provides the shortest horizontal pipe which reduces banging and noise. If you use a longer nipple you could get a lot of banging
    pipers