Originally Posted by Toivo
It won't vent out because the co2 pushes down the poppet in the post to inject it into the beer.
Interesting. I thought there was a pin that pushed down on the poppet (and didn't even bother to look). Anyway, it worked out great! We went through about 4 gal of carbonated beer and only needed one cartridge. I now have a great set-up for portable keg dispensing.