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Got Book Now need main vent!!

TomH42 Member Posts: 43
Last week this site and Bob C. in particular really helped me figure out how to clean a pressuretrol.  All is well on that front now.  While on the site I decided to invest in Dan's "We Got Steam Heat".  Boy, am I glad I did.  About halfway through and I'm starting to think like steam.

Only needed to get past the first 10 pages to know that one of the main vents needs to be reinstalled (a knucklehead took it out 8 years ago with the endorsement of this knucklehead).  

I have attached photo of the pipe and site.  The main insulated pipe runs the length of the house, then loops back towards the boiler where it was vented originally (circled). There is another return line that is being vented by a Hoffman 75 that is working properly (also circled).

The return pipe of the main line is 2" in diameter.  The system supplies 6 rediators.  It used to supply 8 radiatiors (and may again someday).  

Just reading other threads suggests a Gorton #2 is appropriate for most main venting needs.  The plug appears to be 1.25" in diameter.

Suggestions on the set up for the second main vent are appreciated!!


  • BobC
    BobC Member Posts: 5,471
    edited January 2011
    Run it back along that return

    It would be nice to get a foot or more back from that drop down so the new vent lasts a good long time. Maybe a short nipple and an elbow so you can go back along that return, Come out of the elbow with a reducer to get down to a smaller pipe and then another elbow to screw the new vent into. The Gorton #2's are large so you want to make sure you have room for it and that #2 wants to go into a 1/2" fitting - http://www.pexsupply.com/Gorton-G2-Gorton-No-2-Straight-Air-Eliminator-3524000-p

    That book is going to pay for itself in spades!

    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
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