Carbonation Disappearing

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I made some burton bridge from a kit and secondary-fermented it in a 25 litre keg with a tap and a cap capable of taking a CO2 cartridge holder (none was fitted)
I left it in our warm utility room (circa 22°C) for five days to second-ferment with a standard amount of sugar then it was stored in the garage between 16-20°C (daytime). No leaks evident anywhere as the pressure was normal initially.



By the time the barrel was half empty the carbonation seemed less and the beer a bit flat, certainly different tasting to initial pours. I'm just taking a pint glass at a time rather than filling a jug.



Any advice on why this might be happening?






carbonation keg







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    up vote
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    down vote

    favorite












    I made some burton bridge from a kit and secondary-fermented it in a 25 litre keg with a tap and a cap capable of taking a CO2 cartridge holder (none was fitted)
    I left it in our warm utility room (circa 22°C) for five days to second-ferment with a standard amount of sugar then it was stored in the garage between 16-20°C (daytime). No leaks evident anywhere as the pressure was normal initially.



    By the time the barrel was half empty the carbonation seemed less and the beer a bit flat, certainly different tasting to initial pours. I'm just taking a pint glass at a time rather than filling a jug.



    Any advice on why this might be happening?






    carbonation keg







    share|improve this question

























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      I made some burton bridge from a kit and secondary-fermented it in a 25 litre keg with a tap and a cap capable of taking a CO2 cartridge holder (none was fitted)
      I left it in our warm utility room (circa 22°C) for five days to second-ferment with a standard amount of sugar then it was stored in the garage between 16-20°C (daytime). No leaks evident anywhere as the pressure was normal initially.



      By the time the barrel was half empty the carbonation seemed less and the beer a bit flat, certainly different tasting to initial pours. I'm just taking a pint glass at a time rather than filling a jug.



      Any advice on why this might be happening?






      carbonation keg







      share|improve this question















      I made some burton bridge from a kit and secondary-fermented it in a 25 litre keg with a tap and a cap capable of taking a CO2 cartridge holder (none was fitted)
      I left it in our warm utility room (circa 22°C) for five days to second-ferment with a standard amount of sugar then it was stored in the garage between 16-20°C (daytime). No leaks evident anywhere as the pressure was normal initially.



      By the time the barrel was half empty the carbonation seemed less and the beer a bit flat, certainly different tasting to initial pours. I'm just taking a pint glass at a time rather than filling a jug.



      Any advice on why this might be happening?






      carbonation keg




      carbonation keg






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      share|improve this question













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      edited 2 hours ago









      Philippe

      2,4981625




      2,4981625










      asked 4 hours ago









      bigbadmouse

      1406




      1406




















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          my best guess is no leak, but as you pour, if you dont continue to keep the pressure constant, the carbonation will come out of solution, and you will continually get flatter and flatter beer as you pour more.



          example would be drink half of a 2L of soda, then let it sit with a cap on. in a day or 2 you'll notice the pressure will go up, and the soda will be flatter.



          My advised is buy a co2 cartridge to keep the carbonation up and the oxygen out.






          share|improve this answer




















          • Exactly, pressure is lost in the empty space of the key.
            – Philippe
            56 mins ago










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          up vote
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          my best guess is no leak, but as you pour, if you dont continue to keep the pressure constant, the carbonation will come out of solution, and you will continually get flatter and flatter beer as you pour more.



          example would be drink half of a 2L of soda, then let it sit with a cap on. in a day or 2 you'll notice the pressure will go up, and the soda will be flatter.



          My advised is buy a co2 cartridge to keep the carbonation up and the oxygen out.






          share|improve this answer




















          • Exactly, pressure is lost in the empty space of the key.
            – Philippe
            56 mins ago














          up vote
          3
          down vote













          my best guess is no leak, but as you pour, if you dont continue to keep the pressure constant, the carbonation will come out of solution, and you will continually get flatter and flatter beer as you pour more.



          example would be drink half of a 2L of soda, then let it sit with a cap on. in a day or 2 you'll notice the pressure will go up, and the soda will be flatter.



          My advised is buy a co2 cartridge to keep the carbonation up and the oxygen out.






          share|improve this answer




















          • Exactly, pressure is lost in the empty space of the key.
            – Philippe
            56 mins ago












          up vote
          3
          down vote










          up vote
          3
          down vote









          my best guess is no leak, but as you pour, if you dont continue to keep the pressure constant, the carbonation will come out of solution, and you will continually get flatter and flatter beer as you pour more.



          example would be drink half of a 2L of soda, then let it sit with a cap on. in a day or 2 you'll notice the pressure will go up, and the soda will be flatter.



          My advised is buy a co2 cartridge to keep the carbonation up and the oxygen out.






          share|improve this answer












          my best guess is no leak, but as you pour, if you dont continue to keep the pressure constant, the carbonation will come out of solution, and you will continually get flatter and flatter beer as you pour more.



          example would be drink half of a 2L of soda, then let it sit with a cap on. in a day or 2 you'll notice the pressure will go up, and the soda will be flatter.



          My advised is buy a co2 cartridge to keep the carbonation up and the oxygen out.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 2 hours ago









          jsolarski

          1,171516




          1,171516











          • Exactly, pressure is lost in the empty space of the key.
            – Philippe
            56 mins ago
















          • Exactly, pressure is lost in the empty space of the key.
            – Philippe
            56 mins ago















          Exactly, pressure is lost in the empty space of the key.
          – Philippe
          56 mins ago




          Exactly, pressure is lost in the empty space of the key.
          – Philippe
          56 mins ago

















           

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