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Main Venting.

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Fmassarotto_9
Fmassarotto_9 Member Posts: 148
in Strictly Steam
Hi.
I have a quick question regarding main venting. One guy i’ve used for many years said the one is enough and sufficient, but he retired so i found a new guy. He told me that ideally there should be one that goes to every radiator but he only found the one. The main vent is located at the very end of the main, just before it turns up to the bedroom (this is the last radiator, which is also the furthest away). The main measures roughly 23 ft and 1.5 inches diameter (assuming i measured right)

Comments

  • Jamie Hall
    Jamie Hall Member Posts: 27,396
    You only have the one main? Then you only need the one main vent...
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    ethicalpaul
  • ethicalpaul
    ethicalpaul Member Posts: 8,862
    send a picture

    NJ Steam Homeowner.
    See my sight glass boiler videos: https://bit.ly/3sZW1el

    CLamb
  • Mad Dog_2
    Mad Dog_2 Member Posts: 8,564
    An 1 1/2" Steam Main is not common...usually minimum is 2", but I've seen them.  Its all based on the Cubic Inches/feet of air in that pipe x length.  But without getting Crazy, a Gorton # 1 would be fine.  Mad Dog 🐕 
    Consulting by Mad Dog & Matt Jr.
    ethicalpaul
  • ethicalpaul
    ethicalpaul Member Posts: 8,862
    Mine is 2” for the first 1/2 then it goes down to 1-1/2 but my system is small, 200 sq ft. @Dave0176 didn’t like that when he saw it, but it has worked fine.

    i agree with @Mad Dog_2 ! Gorton #1

    NJ Steam Homeowner.
    See my sight glass boiler videos: https://bit.ly/3sZW1el

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