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Home Brew Forums > Home Brewing Beer > General Techniques > Purgeing co2
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Old 07-22-2010, 04:41 PM   #11
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Just fill the keg with sanitizer and use CO2 to push it out (assuming you're intending to FILL the keg with CO2, not purge it of CO2..?).
I think he's talking about purging the air out of a keg that he just filled with fresh beer.
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Old 07-22-2010, 04:42 PM   #12
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Walker thanks Man... Im about to keg a wheat beer so i thought to see if there was an easier method, what psi do you put in the keg?
If you are just trying to get the air out, it doesn't really matter. My regulator is set to 10psi and I just use it like that.
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Old 07-22-2010, 04:42 PM   #13
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Just fill the keg with sanitizer and use CO2 to push it out (assuming you're intending to FILL the keg with CO2, not purge it of CO2..?).

I meant purging o2
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Old 07-22-2010, 04:48 PM   #14
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I do the same as Walker...
Pressurize the keg then vent through the relief valve a couple times.

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Old 07-22-2010, 05:11 PM   #15
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That seems Like it will work, It just makes sense to me if its flipped upside down and all the gas inside is drawn off through the dispensing tube and new gas is continually added then all o2 will be gone
Well, but then you're "shaking" a keg with o2 in it. Just taking a keg with o2 in the headspace and turning it over means that you are encouraging the o2 to mix with the beer. I doubt it'll do any damage, but it doesn't seem like the best practice.

Here's what I do- give the empty keg a shot of co2 if the tank is handy. Then fill the keg, not allowing it to splash while you siphon gently. When you're done, close it up and give it a shot of co2 to seat the lid. Purge out the co2. Do it again a couple of times. Now you can pick up the keg and move it because the co2 is heavier than room air, and it's filled with co2 in the headspace.
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Old 07-22-2010, 05:44 PM   #16
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Well, but then you're "shaking" a keg with o2 in it. Just taking a keg with o2 in the headspace and turning it over means that you are encouraging the o2 to mix with the beer. I doubt it'll do any damage, but it doesn't seem like the best practice.

Here's what I do- give the empty keg a shot of co2 if the tank is handy. Then fill the keg, not allowing it to splash while you siphon gently. When you're done, close it up and give it a shot of co2 to seat the lid. Purge out the co2. Do it again a couple of times. Now you can pick up the keg and move it because the co2 is heavier than room air, and it's filled with co2 in the headspace.
Good point about mixing the o2 in the headspace...

I fill my kegs through the "liquid out" post so I don't have to worry about splashing or introducing oxygen... I purge the empty keg with co2. Then I connect a siphon tube from the fermenter to a liquid out disconnect and open the pressure relief valve on the keg. I either push it out of the fermenter with co2 or let it siphon (depending on the size of the fermenter)

Since I can't "see" the keg filling, I set it on a bath scale and watch the weight as it fills. You can also watch the condensation line on the keg if there is a temp difference.
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