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Gorton #2's-how many in series?

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Brad White
Brad White Member Posts: 2,398
Not that you would pipe the Gortons themselves in series, but I pictured a series of top tappings each with a vent in them. What you describe is parallel and sharing a common 3/4" pipe.

That 3/4" pipe, the common section by your description, would, if open, vent about four #2's.

My information is from the Gill and Pajek venting chart, SKU #300 in the on-line store, a bargain for a good cause at $10-.

I find this stuff fascinating.
"If you do not know the answer, say, "I do not know the answer", and you will be correct!"



-Ernie White, my Dad

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  • Glen_5
    Glen_5 Member Posts: 21
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    Gorton #2's-how many in series?

    My three 3" mains (long) are vented with triple Gorton #2 Air Eliminators which are piped off the one tapping in each main. In other words I have 3 Vents on each of the 3 mains. My question is this, given that the air has to flow through a finite tap hole, say 1/2", does adding more vents necessarily increase the venting capacity. At some point it has to face the limitation from the one tapping on each main right? Does anyone have any idea how many #2's max out the venting capacity on a 1/2" tap? (It may be 3/4 but reduced to 1/2" as that is what the Gorton #2 fits.)

    THANKS.
  • Brad White
    Brad White Member Posts: 2,398
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    Series or do you mean parallel?

    I gather you have one tap per Gorton?
    A 1/2" open pipe vents a bit less than 50% of what a Gorton #2 will.

    You are coming up against a correct assumption that your narrowest passage defines the limitation on venting. Putting three #2's on a 1/2" tapping may seem extreme but will maximize the venting capability of that 1/2" pipe, leaving not much surplus, I would think.

    My concern would be that with only a 1/2" tapping and too many vents, the venting velocity could have you draw up water from the main unless you had sufficient offsets such as an up-sized "tree".
    "If you do not know the answer, say, "I do not know the answer", and you will be correct!"



    -Ernie White, my Dad
  • Glen_5
    Glen_5 Member Posts: 21
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    Brad,

    Maybe I was mistaken in my terminology. The way I set up the vents is that they all sit on one 3/4" pipe, two on tee's and the last one on an elbow, all in a line. Not sure about series or parallel now. :)
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