How much headspace is necessary when kegging?

[erikrocks]

Well, I just kegged a robust porter tonight, and ended up siphoning all the way to the top of the corny...to the point that when I put the lid on, it dipped into the beer.

My question is, do I need headspace in order to carbonate? Should I take an inch off the top?

 

[KYB]

I keep it below the gas in tube.

 

[shataway]

I keep it below the gas in tube.

+1 to this. 2 of my kegs don't seal well when I remove the gas. If the beer was above the gas in tube, I would have a geyser!

 

[david_42]

I stop about 1/2" from the top, as I don't want to dip the lid. Any extra goes in a PET bottle with the Carbonator cap.

CO2 is absorbed at the interface, so by over-filling you get slower carbonation. If you stop at the shoulder of the keg, you've got the maximum interface.

 

[erikrocks]

I stop about 1/2" from the top, as I don't want to dip the lid. Any extra goes in a PET bottle with the Carbonator cap.

CO2 is absorbed at the interface, so by over-filling you get slower carbonation. If you stop at the shoulder of the keg, you've got the maximum interface.

Yeah, that's what I kind of thought. I'll take some out. Thanks.