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-   -   Leaking keg or CO2 being absorbed into beer (http://www.homebrewtalk.com/f35/leaking-keg-co2-being-absorbed-into-beer-282018/)

eabbott88 11-18-2011 10:31 PM

Leaking keg or CO2 being absorbed into beer
 
Question, If you take a full keg of beer and hit it with 30 lbs. of CO2 and then disconnect it for a few days the CO2 will be absorbed into the beer but should the pressure in the keg drop or will the pressure stay at 30?

Iíve been fighting a leaking keg and thought I had it fixed after replacing a post but now Iím not too sure.

Shooter 11-18-2011 10:35 PM

The pressure is going to equalize between the head space and the beer. So, no, it shouldn't stay at 30 psi in the head space.

eabbott88 11-19-2011 12:58 AM

The pressure will drop a ways and then seams to hold steady so that makes sense. Thank you!!!

Bobby_M 11-19-2011 01:27 AM

More specifically, the head space is typically about 1/10th the volume of the whole keg. If you put 30psi into the head space and quickly disconnect, in about a day the equilized pressure in both the headspace and beer with be about 3 PSI. If you look at the charts, you'll quickly see why you can't practically do a single application of gas to reach say 2.5 volumes. A chart pressure of 13 psi would require a single burst of 130psi which is where your keg's pressure limit sits.


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