twin cornies, same gas supply - different fizz

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Subsonic

twin cornies, same gas supply - different fizz

Post by Subsonic » Wed Jun 24, 2009 7:20 pm

I have 2 identical cornies in my beer fridge. Wheat beer gassed to 20psi with a temp of 3c and a beer line to give 1psi at the end. Corny 1 was perfect, real fizzy and crystal clear with a spot on head. Ran out tonight so I swapped the beer out connector to keg 2 (on the same gas line with a 'T' off to both kegs). Now this keg is 'flatish'. Am I screwing up by having 2 kegs connected with a 'T' to each other? I'm kinda thinking they must be reaching some kind of gas equilibrium with one keg having a lot of liquid and not much gas (keg 2) and the other having gradually less liquid but maybe more gas over (keg 1). Then again I may know jack! But if I have 2 kegs should I use 2 separate gas lines? Cheers for any info - Subsonic (on a 'flatish' wheat beer.....)

loffler
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Re: twin cornies, same gas supply - different fizz

Post by loffler » Fri Jun 26, 2009 11:14 am

If you have the regulator set at 20psi and a T spilt to 2 kegs you will have 20 psi in both kegs regardless of how much liquid is in them. The liquid will become saturated with CO2 and any additional CO2 is only to fill dead space as the liquid goes down. Its possible the one with less liquid in will saturate quicker.
The less liquid you have the more CO2 you need but the pressure will stay the same - thats what a regulator does. By splitting it you will simply use the CO2 up quicker.
As long as the temperature of both kegs are the same they will both have the same carbonation level eventually. If the beer lines are the same length, you will get the same exit pressure.
The difference between the 2 kegs must come from something else. Either keg 2 hasnt been under pressure long enough to be saturated with CO2 or the beer line is dirty or a different length causing too much resistance.
I dont think you can have a leak as both would be the same carbonation level.

I myself have a secondary regulator and can set different pressures on each keg if I want, so dont have the same setup as you so may be wrong.
Someone else may add to or correct this, but thats all I can think of.

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