TimpanogosSlim
Well-Known Member
Well it's a pin lock keg so I was purging the oxygen from the
From the gas post you say.
Two things.
1: I don't believe that co2 introduced through the gas dip tube forms a little blanket right at the bottom of the headspace in the tank. Makes no sense. Turbulence from the gas entering would cause it to mix with the atmosphere inside the headspace almost completely. IMHO.
2: Even if the "oxygen floats on top" theory is correct, which it isn't, venting through the gas post comes with an inherent risk of beer fountains.
BUT, this is all easily dealt with. Go to Harbor Freight or whatever hardware store and get a cheap pipe cutter.
The next time you have the gas post off, use the pipe cutter to trim the gas dip tube as short as you can make it with the pipe cutter, which is about 1/2 inch.
The only real job that dip tube has is to hold the o-ring in place.
This will help you avoid beer fountains, and assuage any superstition about mystical co2 that does not rapidly mix with it's surrounding atmosphere.
If you don't have a pin-lock post wrench, go make one. or buy one. But if you have a dremel tool or an angle grinder, they are cheap and easy to make. If you don't have the ability to strip down the keg, there will come a day when you have a leak that you can't fix until you have the right tools.