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Main Vent brand/ size

I've got 2 radiators beyond this area that aren't getting any steam. I deduce its a clogged main air vent. I want to order a replacement for this one. Any ideas on the brand/ size?
I've got to move a lot in the basement to get back to this to replace it - would prefer to have the new vent in hand. I've already drained the system and adjusted the pressutrol to try to get the radiators to heat up. They have before but then stopped.



Comments

  • KC_Jones
    KC_Jones Member Posts: 5,690
    How long and what size are the mains?

    At the absolute minimum you will need a Gorton #1, but depending on the main length, may need more than that. The old systems are typically way under vented for modern (post coal era) boilers.
    2014 Weil Mclain EG-40
    EcoSteam ES-20 Advanced Boiler Control
    Boiler pictures updated 2/21/15
    ethicalpaul
  • Mad Dog_2
    Mad Dog_2 Member Posts: 6,691
    Make it simple..Gorton #2.  Mad Dog 🐕 
  • KC_Jones
    KC_Jones Member Posts: 5,690
    Mad Dog_2 said:

    Make it simple..Gorton #2.  Mad Dog 🐕 

    Looks like a tight spot, I'm not sure if a #2 would fit. They would need to take some measurements to see.

    That capacity would do it for sure, I do agree with you there.
    2014 Weil Mclain EG-40
    EcoSteam ES-20 Advanced Boiler Control
    Boiler pictures updated 2/21/15
  • Steamhead
    Steamhead Member Posts: 16,710
    KC_Jones said:

    Mad Dog_2 said:

    Make it simple..Gorton #2.  Mad Dog 🐕 

    Looks like a tight spot, I'm not sure if a #2 would fit. They would need to take some measurements to see.

    That capacity would do it for sure, I do agree with you there.
    @SPrivette , what is the height between the top edge of the elbow and the floor above?
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting