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.
If our community has helped you, please consider making a contribution to support this website. Thanks!

CROSS OVER STEAM MAIN TO DRY RETURN

Options
simon_skove
simon_skove Member Posts: 50
edited November 19 in Strictly Steam

Is this where main steam line is vented to the dry return? After nearly 100 years, should the nipple leg be taken off and let come out what may?

img-5902.jpeg

Comments

  • neilc
    neilc Member Posts: 3,086

    check my reply in your other thread,

    is that a capped nipple at the bottom of the right 90, or does that go thru the wall as a wet return?

    answer in the other thread,

    known to beat dead horses
  • Jamie Hall
    Jamie Hall Member Posts: 26,679

    Yes… but. It is very likely that at one time at the top of that arrangement there was a crossover trap — a simple radiator trap, but connected starting at the steam main with a short nipple up, then a 90 and a nipple to the INLET of the trap, with the outlet of the trap going straight down through a nipple to the dry return. Air went through the trap, and condensate went down the water seal loop and made its way back to the dry return..

    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Steamhead
    Steamhead Member Posts: 18,146

    That might be a Tudor system. Go here for some illustrations of how that loop seal fits into the system:

    https://www.heatinghelp.com/systems-help-center/european-heating-systems-circa-1907/

    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • simon_skove
    simon_skove Member Posts: 50

    no evidence of that Jamie.

Categories