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Why does PSI drop after pouring?

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  • Why does PSI drop after pouring?

    I have a BevAir kegerator with two kegs running off one Micromatic regulator. I have the regulator set to 10 psi, but when I pour a beer the pressure will drop to 8-9 and then take a while to get back up to 10. Maybe 30 minutes or so. Once this happens, if I close the gas valve going to the kegs the regulator will immediately jump to 10. Open the valve back up and it drops back down to 8-9. Anyone have any ideas what's causing this?

  • #2
    Originally posted by infantrytroop22 View Post
    I have a BevAir kegerator with two kegs running off one Micromatic regulator. I have the regulator set to 10 psi, but when I pour a beer the pressure will drop to 8-9 and then take a while to get back up to 10. Maybe 30 minutes or so. Once this happens, if I close the gas valve going to the kegs the regulator will immediately jump to 10. Open the valve back up and it drops back down to 8-9. Anyone have any ideas what's causing this?
    1. Make sure the main valve on your CO2 tank is completely open.

    2. Check for a clogged CO2 line.

    3. Make sure your Thomas check-valve is not obstructed.

    4. If you have an extra keg coupler, then try a different coupler. If the new coupler solves the problem or you don't have another coupler, then disassemble your coupler and clean it.

    5. If none of this works, then it could be a bad regulator.
    Last edited by Johntomk; 09-13-2015, 10:02 AM.

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    • #3
      Originally posted by Johntomk View Post
      1. Make sure the main valve on your CO2 tank is completely open.

      2. Check for a clogged CO2 line.

      3. Make sure your Thomas check-valve is not obstructed.

      4. If you have an extra keg coupler, then try a different coupler. If the new coupler solves the problem or you don't have another coupler, then disassemble your coupler and clean it.

      5. If none of this works, then it could be a bad regulator.
      Sorry, what's the Thomas check-valve? I'm clueless, I know...

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      • #4
        Originally posted by infantrytroop22 View Post
        Sorry, what's the Thomas check-valve? I'm clueless, I know...
        No problem! It's the rubber valve that prevents liquid from backing up into your CO2 line. When you disconnect the CO2 line from the coupler you should see it. It will either be stuck to the end of the CO2 line or sitting in the coupler where the CO2 line connects.

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        • #5
          Originally posted by Johntomk View Post
          No problem! It's the rubber valve that prevents liquid from backing up into your CO2 line. When you disconnect the CO2 line from the coupler you should see it. It will either be stuck to the end of the CO2 line or sitting in the coupler where the CO2 line connects.
          Thanks! How should I check to see if the CO2 lines are obstructed?

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          • #6
            Originally posted by infantrytroop22 View Post
            Thanks! How should I check to see if the CO2 lines are obstructed?
            Disconnect the CO2 line and open the valve. Gas should come out and blow anything in the line out.

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            • #7
              Originally posted by Johntomk View Post
              Disconnect the CO2 line and open the valve. Gas should come out and blow anything in the line out.
              Thanks. I figured that out right after I posted my question. Haha. Not sure why I didn't think of that. Duh.

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