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Replacing Hoffman with Gorton

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Mattm15
Mattm15 Member Posts: 10
Hey guys,

So last I posted I mentioned the incredibly loud floor to ceiling pipes on the top floor of my pre-war NYC apartment. I've bought a Gorton No. C air valve to replace the Hoffman #43 that's there now. The only problem is that -- while both have 1/4" openings -- the exterior of the Gorton C is a bit larger than that of the Hoffman and thus cannot fit into the pipe. I've included pictures below as reference.

My question is this: is there anyway of remedying this? Is there an extension pipe that I could attach? Or perhaps a different Gorton? Something?

As always, thanks in advance!

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  • Steamhead
    Steamhead Member Posts: 17,008
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    How much headroom do you have between the opening for the vent and the ceiling?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
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  • Gordo
    Gordo Member Posts: 857
    edited January 2019
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    It looks like the Hoffman is 1/8" NPT (national pipe thread), while the Gorton you have is 1/4" NPT (?). You can buy a brass adapter (1/4" female NPT to 1/8"male NPT) or return the 1/4" Gorton and get an 1/8" Gorton.
    All Steamed Up, Inc.
    "Reducing our country's energy consumption, one system at a time"
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Baltimore, MD (USA) and consulting anywhere.
    https://heatinghelp.com/find-a-contractor/detail/all-steamed-up-inc
    CLamb
  • Mattm15
    Mattm15 Member Posts: 10
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    There's about 8 inches from pipe to ceiling. I've included a picture below. And is that the case (that it's 1/4 and not 1/8)? My landlord said that it was a 1/4" hole, but I think that you're right. The holes are both 1/4" wide; it's the exterior that's super thick on the Gorton. Maybe I could just buy the adapter.

    As always, thanks for your input, everyone
  • nicholas bonham-carter
    nicholas bonham-carter Member Posts: 8,578
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    If only your landlord would say, "I'll turn down the pressure, and catch up with the maintenance of the system. Thanks for bringing this to my attention, so i can reduce my gas bill 30%, and prolong the life of my boiler!"--NBC
    Mattm15
  • gfrbrookline
    gfrbrookline Member Posts: 753
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    Since you haven't installed it I would return it and get the correct 1/8 npt.
    Mattm15