Originally Posted by BullGator
Ok, so this thread started out helping me answer my question but has turned into a tutorial of how to setup an o2 system (not complaining, just an observation).
I have a 15 gallon compressor and have installed pvc lines running along the top walls of my garage with a few drop downs where I can connect air tools at different places in my garage. I thought of adding one where my keezer was so I could attach a ball lock air connector so I could clean my kegs and keezer every few months ( the 20 min flush with blc). Rather than waste co2, I thought using the compressor was a good idea. until I read this thread that is. Now I have about 30 feet of pvc pipe, plus the hard plastic yellow air line that the air has to go through before it gets to my keezer area. The compressor says oil free. So what are the chances of spraying oil in my kegs while I am flushing with blc?
Second question is can I aerate with this setup? I currently use the thing with the wings that you stick in the carboy and attach to your drill. Don't know how much oxygen is getting in there but after a few minutes I have a crap ton of foam on top.
Oh and I am putting a separate regulator for this line with one of those hepa beer line filters.
You just need to do what I explained above - you need to have a setup which accomplishes two things:
1) Removal of any liquid matter - coaelscing filter or Kobalt makes this great little cheap filter: http://www.lowes.com/pd_221024-47120-SGY-AIR10_4294813345__
2) Filtering of the air to a very fine micron level (0.2um). I'll warn you these types of filters are pricey.
And then you just need beverage tubing capable of handling the pressure (which isn't much anyway), and a check valve so beer can't enter it's way back up into the line and filter.
I will say though I'd minimize if possible the amount of tubing (other than the beverage tubing) the air has to travel through before hitting this setup just to minimize any extra junk getting into the line.
It really is a very simple deal. I use air for aeration, but also to blow liquid out of my pumps and tubing when I'm done. You definitely can use it to clean kegs but you need to use it filtered as well, and you don't want to leave it in the keg. Your final blanket should be CO2.