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I think the guy that installed this is dead...and so is the guy that sold it to him!!

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JackC
JackC Member Posts: 2
edited October 2016 in Strictly Steam
Can anyone ID this main air vent on a residential (two story) LP steam system?
Can you please fill me in on who makes/made it and some theory behind its design?
It seems to have what looks like two air valves attached to a common header that screws into the fitting on main.
Sorry, I cant get any closer for a better picture due to massive amounts of clutter.





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  • Jamie Hall
    Jamie Hall Member Posts: 23,283
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    Looks to me -- and it's kind of hard to see -- like an early version of the antler/menorah design we use all the time to get more venting in a specific location. Without a close picture of those vents, though, it would be hopeless to figure out which make and model they are, never mind whether they are still working.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • Steamhead
    Steamhead Member Posts: 16,833
    edited October 2016
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    I'm certain that's a special vacuum vent made by Illinois Engineering Co. It was designed to hold vacuum down to a certain point, then break the vacuum if it got too deep. Not sure what the model name was but I know it's in one of my old ASHVE Guides- I'll look it up when I get a chance.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
    SWEI

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