Push Eject wrote:The solution has been to bleed pressure out of the keg before hooking it up to the serving co2. Make sense? Since then the lines have been clean.
If you do that very often, or with a less than full keg, are you venting a fair amount of your beer's aroma into the atmosphere?
Push Eject wrote:I don't see how a check valve would help as they are not generally installed at the keg, right? Instead the prevent the flow of beer back (through a manifold if you have one) to the tank...? Please correct me on this if I'm wrong.
My check valves are installed up at either the regulator, or the manifold, or both, but not down at the QD on the keg.
The line between the check valve and the keg is pressurized, but less so than the keg. When the QD is pushed on, the only air (or liquid) that is going up that tube is the amount it takes to pressurize that piece of tube to the same pressure as the keg.
Hmm... I guess, especially if the line is long, you could get a fair bit of beer up the line just from that pressurization.
OK, how about "a check valve will help prevent you having beer shoot all the way up to the regulator and out the relief valve on the back, causing you to cry over spilt beer and spend and evening rebuilding your sticky regulator. But it won't keep ALL the beer out of the lines."