I have a 6 keg keezer thats set to 38-40F and 12 psi (~2.4 volumes) with the tank/regulator inside. I just dropped in a keg that I want to chill down to 32F. How can I do this without messing up the carbonation of the other kegs? I don’t have another fridge/freezer for cold crashing and dont really want yet another fridge. I was thinking of lowering the regulator to 8 psi for the one keg and shutting the valves to the rest but won’t the other 6 kegs absorb the other 12 psi headspace and get more carbonated/the regulator gets colder and the 8 psi setting changes? This feels tricky!
I would just leave it at 38-40F and 12 psi, and let the keg take its time to carbonate at those temperatures. It might take a little longer to clear, but this would be the simplest (least effort) path, from my perspective.
If you really want to give it some time at 32F, then your idea of shutting the values and dropping the temp to 32 and 8 psi is fine. I think the amount of headspace CO2 absorbed for the initially 12 psi kegs would be negligible (although that depends on how full they are)…in any case, I wouldn’t worry about it.
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