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  1. 08-11-2008 11:52 PM #1
    modderman
    modderman is offline Junior Member
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    Default 12g co2 keg pump [QUESTION!!!]

    Has anyone ever used 12g co2 cartridges to pump?
    I have whole setup with the regulator and tap, I just do not have a co2 tank.
    I was wondering if anyone had any suggestions: I was going to machine a block that would tap the 3 co2 cartridges and connect to the tap. Would there be any problem with this? Isn't this pretty much the same as using a large tank, but instead using 3 little tanks?


    3500 in^3 in a keg (15.5 gallons)
    from data I found: at 10in^3, a co2 canister puts out 420 psi.
    So I did some calculations and determined I would need 3 so that by the end I could have at least 3 psi in the keg.
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  2. 08-12-2008 02:16 PM #2
    cubby_swans's Avatar
    cubby_swans
    cubby_swans is offline Super Moderator
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    Quote Originally Posted by modderman View Post
    Has anyone ever used 12g co2 cartridges to pump?
    I have whole setup with the regulator and tap, I just do not have a co2 tank.
    I was wondering if anyone had any suggestions: I was going to machine a block that would tap the 3 co2 cartridges and connect to the tap. Would there be any problem with this? Isn't this pretty much the same as using a large tank, but instead using 3 little tanks?


    3500 in^3 in a keg (15.5 gallons)
    from data I found: at 10in^3, a co2 canister puts out 420 psi.
    So I did some calculations and determined I would need 3 so that by the end I could have at least 3 psi in the keg.
    You're talking about using three 12 gram co2 cartridges to tap a 1/2barrel? You would typically get 1 keg to tap using 1/2 lb of co2. If you had a 20oz tank, I'd say go for it, but 3 (12) gram co2 cartridges will be nowhere near enough co2 to tap a keg. I think you'd need more like 20 of them. You want around 12 psi from the beginning to the end of the keg to tap it.
    Last edited by cubby_swans; 08-12-2008 at 02:20 PM.
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  3. 09-17-2008 11:37 AM #3
    whutever
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    What you're attempting to do would require 15 or more of a 16g cartridge to push a 1/2 barrel. I use these cartridges from More Beer to dispense from my Corney kegs at our driveway happy hours.
    Last edited by whutever; 09-17-2008 at 11:39 AM.
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  4. 09-17-2008 01:50 PM #4
    Scott Zuhse
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    Under perfect conditions, it requires 6 tenths of a pound of CO2 to dispense a domestic 1/2 bbl. This would equate to approx. 272 grams.
    Scott Zuhse, Instructor Micro Matic Dispense Institute
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  5. 09-20-2008 03:50 PM #5
    BrewGuru
    BrewGuru is offline Super Moderator
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    272g / 12 g = 22 2/3 units....

    12g CO2 cartridges are usually around $1/each...

    At $23 per 1/2bbl dispensed in CO2 cost alone, this could possible the least economical way to push beer out of a keg!

    A proper 5lb CO2 tank setup will cost you MUCH less in the long run.
    Another thing to note here is that it is very difficult to maintain the proper level of pressure with these little cartridges, they are intended for special event (1 day only) and remote use.
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  6. 10-03-2008 05:58 PM #6
    tomtom
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    Im currently using a 20 oz paintball cylinder ($4 to fill),and it gets me through
    a 1/4 and a 1/2 barrel keg with a little co2 to spare.
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