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New Vaporstat installed system pressure question

borner
borner Member Posts: 19
Hello!
I was waiting for the warm-ish weather so I didn't freeze if I messed up, so today I installed my new vaporstat and 16oz gauge.
The pressure builds up to 10-12 oz while venting the main (1 gorton #1).
After the main closes, pressure holds steady at 8-9oz while the radiators warm up. (its about 63F out / in side.. but wanted to test) All rads have new Hoffman 1A's.
That sounds high after reading everyone else's experiences.
Seems like I need more main venting, maybe another #1 (or more). Does that seem correct?
Also all my Hoffmans are set around "1" - "2" and radiators heat up pretty evenly. Can I just adjust them all up evenly, shift to "3" - "4" to keep the pressure lower?

Thanks for all your help, you guys are amazing. Also included a picture of the new set up, because I'm a little excited about it

Bret

Comments

  • Fred
    Fred Member Posts: 8,542
    How long are the mains and what diameter pipe? A Gorton #1 is very little venting unless your mains are no more than about 10 ft of 2" pipe. That's about what a Gorton #1 can effectively vent.You always want to vent the mains fast. You really can't over vent them but you reach a point of no return on your investment.
    As far as the Hoffman 1A's. A setting of #3 is about the same as a Hoffman #41 which is a slow vent. I would set most of your radiators at #3 and those that are larger rads or further away from the boiler at #4 or maybe even #5.
  • borner
    borner Member Posts: 19
    Ok, that makes sense. The main is about ~23-25' of 2"
    Sounds like I need a 3-point (if you will) antler of Gorton #1s
    Thanks for your insight!
  • Jamie Hall
    Jamie Hall Member Posts: 23,161
    borner said:

    Ok, that makes sense. The main is about ~23-25' of 2"
    Sounds like I need a 3-point (if you will) antler of Gorton #1s
    Thanks for your insight!

    One Gorton #2 or a Big Mouth would do, too.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    KC_Jones
  • borner
    borner Member Posts: 19
    Big mouth, I like the sound of that. I can't seem to find them at Supply House... Is that the actual name of the vent?
  • Fred
    Fred Member Posts: 8,542
    The Barnes and Jones Big Mouth is a far better vent that the Gorton #2, In my opinion. It is all Brass construction, vents at double the capacity of the Gorton #2 and costs a little less. Here is the link:
    https://www.amazon.com/s/ref=nb_sb_noss/147-3054328-0942228?url=search-alias=aps&field-keywords=Barnes+and+Jones+Big+mouth+vent
  • Steamhead
    Steamhead Member Posts: 16,796
    Only problem with the Big Mouth is it doesn't close against rising water, so if something goes wrong you'll have a major leak. If your "A" dimension (height of the lowest steam-carrying pipe above the boiler's waterline) is marginal (less than 28 inches) I'd stay with the Gorton.

    And the Gorton is all-brass too.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • ChrisJ
    ChrisJ Member Posts: 15,584
    Steamhead said:

    Only problem with the Big Mouth is it doesn't close against rising water, so if something goes wrong you'll have a major leak. If your "A" dimension (height of the lowest steam-carrying pipe above the boiler's waterline) is marginal (less than 28 inches) I'd stay with the Gorton.

    And the Gorton is all-brass too.

    The Gorton #2 is all brass?
    The #1s I have feel and sound like painted steel?

    Single pipe quasi-vapor system. Typical operating pressure 0.14 - 0.43 oz. EcoSteam ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
  • JUGHNE
    JUGHNE Member Posts: 11,042
    Try a magnet. The G-2 I just checked is not steel. Could only feel some steel thru the case around the top.
    I would call it brass with some steel parts inside. Could be some type of stainless steel inside that can be magnetized.
  • Steamhead
    Steamhead Member Posts: 16,796
    Might be the seat. Some trap manufacturers did this too, since that's where most of the wear occurs.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting