Originally Posted by djmd
Don't let that sucker sit at 5. What will happen is the CO2 will come out of the beer (since it's higher pressure) and will come through your beverage line as bubbles causing even more foam.
Sorry but that defies the laws of physics. The CO2 will come out of the beer still in the keg into the head space. The beer in the line will just travel slower.
The end result might be disappointingly flat beer.