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Riser venting

I live in a 6 floor Co-Op building that has risers in the bathroom and kitchen. They had angle Gorton D vents on them and a plumber came in today and installed a 1/8 x 3/4 elbow with a MoM #1 straight main vent on both.
 Aside from the downgrade in quality, I’m curious, is there any difference in venting or function by installing it this way? From what I understand Gorton D, and MoM/Gorton # 1 have the same venting capacity so I’m trying to wrap my head around it. 

Also, is there any possible test/way to find out if a main feeds a radiator? I’m trying to find out if that bathroom riser feeds the radiator in my bedroom which is on the other side of that wall. 

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Comments

  • ethicalpaul
    ethicalpaul Member Posts: 7,646
    edited January 2024
    What makes you think there's a downgrade in quality? I've seen a lot of anecdotes about MoM vs Gorton, but no data so far. D and #1 of MoM and Gorton are the same size.

    If the pipe gets hot above the vent, you can be pretty sure there is a vent above it, likely on a radiator. What floor are you on?

    If you want a little more heat in that bathroom, remove the rope.

    NJ Steam Homeowner.
    Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
    See my sight glass boiler videos: https://bit.ly/3sZW1el

    PC7060
  • PC7060
    PC7060 Member Posts: 1,634
    edited January 2024
    What does valve on lower right side of door control?
  • Ldallas_87
    Ldallas_87 Member Posts: 18
    Just the crimped construction and plastic float. I’ve also had one leaking from the crimp joint but aside from that, I am on the top floor. The rise ends in my apartment. 

    That valve in the picture is a water shutoff valve. 
    ethicalpaul
  • ethicalpaul
    ethicalpaul Member Posts: 7,646
    edited January 2024
    Why don't you like the plastic float? It doesn't rust.

    The rise ends in your apartment, you mean your apartment is on the top floor? Then I think it's strange that the pipe goes through the ceiling.

    NJ Steam Homeowner.
    Free NJ and remote steam advice: https://heatinghelp.com/find-a-contractor/detail/new-jersey-steam-help/
    See my sight glass boiler videos: https://bit.ly/3sZW1el

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