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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > How long can we leave in a carboy ?
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Old 08-14-2012, 05:19 AM   #11
TimpanogosSlim
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Whenever you keg a beer, you should always purge the headspace of atmospheric gasses by pressurizing it with co2 and relieving the pressure 5 or 6 times (well, I do it 6 times), and then bring it up to pressure again with co2.

Kegs seal from the inside, and will not seal properly without internal pressure.

7psi bare minimum. 12psi reasonable. 20psi not unreasonable - you were planning on carbonating it anyway - but if your co2 system doesn't have a check valve protecting your regulator, you should make sure that you release the pressure before hooking it up for serving.

And, a keg is a dark place

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Old 08-15-2012, 05:20 AM   #12
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Quote:
Originally Posted by TimpanogosSlim View Post
Whenever you keg a beer, you should always purge the headspace of atmospheric gasses by pressurizing it with co2 and relieving the pressure 5 or 6 times (well, I do it 6 times), and then bring it up to pressure again with co2.

Kegs seal from the inside, and will not seal properly without internal pressure.

7psi bare minimum. 12psi reasonable. 20psi not unreasonable - you were planning on carbonating it anyway - but if your co2 system doesn't have a check valve protecting your regulator, you should make sure that you release the pressure before hooking it up for serving.

And, a keg is a dark place
Also, it might not be a bad idea for your last pressure purge to go up to even 30psi to ensure that your lid seal gets seated nice and tight. Nothing would be worse than a leak in your lid and you not knowing it, letting air in and skunking your beer.
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