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Main Vent Calculation

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jamesylove
jamesylove Member Posts: 6
in Strictly Steam
I have no main vents in my single pipe steam system.  I have two mains - a 45 ft run and a 24 ft run.  I've removed sheetrock and have found a spot for the main vents, but would like some assistance on how to calculate the optimal number of main vents.



For a 45 and 24 ft run (1 3/4" pipe), how many Gorton #2s would you recommend on each main?



Thanks for the help.

Comments

  • Steamhead
    Steamhead Member Posts: 18,197
    I'd use a Gorton #1 on the short main

    and a #2 on the longer one.



    If you want to use all #2s, use one on the short main and two on the long one.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
  • jamesylove
    jamesylove Member Posts: 6
    Tapping into main

    Any recommendations on drilling/tapping into the main?  I do not have room to insert a tee, so I'll have to tap it.  Is a 1/2" tap sufficient?
  • Steamhead
    Steamhead Member Posts: 18,197
    Yup

    that'll work fine. Just make sure you angle the tap up slightly from horizontal. This will angle the pipe upward a bit so water won't collect in it.
    All Steamed Up, Inc.
    Towson, MD, USA
    Steam, Vapor & Hot-Water Heating Specialists
    Oil & Gas Burner Service
    Consulting
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