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Thread: Gas/Guiness

  1. 03-08-2009 02:43 PM #1
    mmania
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    Default Gas/Guiness

    Can I turn the main tank valve on and off to control pressure or should I always have a constant flow using the screw valve on the regulator? If so, how long should I open the valve on a fresh Keg?
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  2. 03-08-2009 06:41 PM #2
    Scott Zuhse
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    Conduct a leak test with your pressure around 32 PSIG. Adjust this using the screw control on front of the regulator. Once you determine there are no leaks, leave the valves open all the time.

    The tank valve should be opened all the way.
    Scott Zuhse, Instructor Micro Matic Dispense Institute
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  3. 03-08-2009 07:41 PM #3
    mmania
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    Default Thanks Scott

    Thanks, should I maintain 32 PSIG as the working pressure for refrigerated Guiness no matter what the volume?
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  4. 03-09-2009 03:48 PM #4
    DCullender
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    mmania,
    I assume that your question is regarding Guinness and 75/25 blended gas, commonly called G Gas.

    The 32 psig is a good starting point for Guinness but you may need to increase it to get the proper cascade effect and the creamy head.

    I've found that 32 to 35 is a good range for Guinness.

    Dennis
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  5. 03-19-2009 08:44 AM #5
    jedivader
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    Default Nitro Drop

    Do all styles work on nitro?

    Also, my first nitro at home was with Murphy's and it worked great. I tried a local brewpub stout (DuClaw) on nitro and it did not taste as smooth and did not have the same pour/casced as the murphy's. Do only certain beers work with nitro?
    Mmmmmm....beer!
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  6. 03-19-2009 11:28 PM #6
    Piper
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    You technically can use 75/25 on anything, but you'll end up with flat beer for most ales/lagers near the end of the keg. One time, I accidentally used my G gas cylinder for Smithwick's. It was fine until about 3/4 of the keg was gone, and then it was flat. Don't think for a second that I didn't drink it all regardless. G gas is mainly for stouts or Boddington's. However, there are microbrews that "nitro" stuff as well.
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  7. 03-22-2009 09:59 AM #7
    Scott Zuhse
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    The 25% CO2 / 75% nitrogen was designed specifically for nitrogenated beers. There are stout beers that are not nitrogenated and may not require the gas mix.
    Scott Zuhse, Instructor Micro Matic Dispense Institute
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  8. 03-24-2009 12:38 PM #8
    jedivader
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    Default Nitrogenated/

    Quote Originally Posted by Scott Zuhse View Post
    The 25% CO2 / 75% nitrogen was designed specifically for nitrogenated beers. There are stout beers that are not nitrogenated and may not require the gas mix.
    How do you know if a stout is notrogenated?

    I would assume the only way to know is to ask the brewer/supplier.

    This was probably the case with my DuClaw stout. I did not know that a beer had to be nitrogenated in order to pour/taste right on nitro gas.
    Mmmmmm....beer!
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