these are "PW" or pressurized water extinguishers. I have 2 in my shed for the bon fire pit. You can get em from any fire extinguisher supplier.
Conditioning -Coffee Ground Stout, Ed's crazy Apfelwein
Drinking - American light, Blue Moon Clone
On Tap- English bitter, BB Octoberfest, BB IPA
Surly Midget Brewery
The old one that I have is about 4 gallons or so... all the new ones are 2.5 gal. If the first one works, I might have to find a couple more...
4 gallons? never seen one that big
*that's what she said*