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Old 11-06-2012, 11:40 PM   #1
jlillie
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Default Force carbonating with CO2

When i forced carbonated my first 2 kegs, I put 30 lbs pressure on them and then decided to turn off the co2 since i was a little worried that while away, i would spring a leak and lose all the co2. Each day when i went back to check the pressure on the keg, i would find almost none. I thought i must have a leak but after pressurizing in couldn't find any.
Now, on my 3rd keg i realized that the co2 was not being lost but must be being absorbed into the beer.
In all my reading about forced carbonating i never heard anyone say this.
Would this be correct?
Thanks, John

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Old 11-06-2012, 11:43 PM   #2
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Originally Posted by jlillie View Post
When i forced carbonated my first 2 kegs, I put 30 lbs pressure on them and then decided to turn off the co2 since i was a little worried that while away, i would spring a leak and lose all the co2. Each day when i went back to check the pressure on the keg, i would find almost none. I thought i must have a leak but after pressurizing in couldn't find any.
Now, on my 3rd keg i realized that the co2 was not being lost but must be being absorbed into the beer.
In all my reading about forced carbonating i never heard anyone say this.
Would this be correct?
Thanks, John
Yes.

The point of force carbing is to force the co2 into the beer by pressure.
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Old 11-07-2012, 04:49 AM   #3
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And you have to leave the gas supply on to maintain that magic 30psi for the 36 hours.

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Old 11-07-2012, 05:24 AM   #4
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36 hours at 30 psi, then take off the gas line, bleed some co2 out till it's under 10 psi, then put the gas line back at serving pressure.

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Old 11-07-2012, 10:07 AM   #5
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Why not just set it at the right pressure to begin with and give it a week?

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Old 11-07-2012, 11:40 AM   #6
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Why not just set it at the right pressure to begin with and give it a week?
I believe you could... but that is taking the "force" out of force carbing
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Old 11-07-2012, 11:55 AM   #7
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I believe you could... but that is taking the "force" out of force carbing
No, you're still forcing CO2 into solution, just in a slower and more predictable manner. Force carbonation just means carbonating with an external CO2 source. Compared to natural carbonation, where the yeast provide the CO2.
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Old 11-07-2012, 05:50 PM   #8
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36 hours at 30psi has never in over 40 tries, overcarbed my beer. It is very predictable IMO.

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Old 11-08-2012, 12:44 AM   #9
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Why not just set it at the right pressure to begin with and give it a week?
One reason is that a week is not really long enough and people are impatient.
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Old 11-08-2012, 07:56 PM   #10
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36 hours at 30psi has never in over 40 tries, overcarbed my beer. It is very predictable IMO.
If you happen to go over the 36 hrs at 30lbs, will it over carb?
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