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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
Member Posts: 2
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.

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.

0
Comments
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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 England0 -
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
Consulting1
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