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Size of main vents required

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cdm
cdm Member Posts: 77
in Strictly Steam
I have a one pipe system with 1.22 cu.ft. of volume in the 1st main and 1.89 cu.ft. of volume in the second main. I want to REALLY quickly vent both mains in a few minutes - how much venting do I need @ 1oz.? Gortons or Hoffmans ?



thanks -cdm-

Comments

  • BobC
    BobC Member Posts: 5,539
    Gortons

    The Hoffman 75 vents at 0.5cfm , the Gorton #1 at 0.33cfm, and the Gorton #2 at 1.1cfm -all at 1 oz. What kind of vents are on there now?



    It sounds like you want to start with a G#2 on the small main and a G#2 and 2ea G#1's on the large main. If you currently are using Hoffman 75's two of them pretty much equals a Gorton #2.



    Bob
    Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
    Vaporstat with a 12oz cut-out and 4oz cut-in
    3PSI gauge
  • cdm
    cdm Member Posts: 77
    Size of main vents required

    Bob - On the smaller main I have a Gorton # 2, on the larger main I have 2-Hoffman # 75s and a Gorton # 1. So i guess the sizing I have is O.K.



    Thanks for your input - I really appreciate your expertise. -cdm-

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