No beer coming out

[feblesc]

I tapped a new keg of Heineken for the first time and only air will come out. I laid the keg on its side and it worked for a while but now is back to the same. I re-filled the Co2, just in case but it didn’t help. This is about the 8th or 9th keg on this kegerator and never had a problem. Before I used wheat microbrews like Blue moon and Beehive. I need some help from the beer goods…..please!!!!!

[edramshaw]

By chance did you change the coupler? I know Blue Moon uses a D series coupler and Heineken uses an S. If you didn't change it then that is definately the problem. Otherwise the keg itself might be messed up.

[feblesc]

What is the difference between a D series and an S series coupler?

[edramshaw]

Not much! The only difference is that the actual piece that connects to the keg protrudes down further than a D coupler. Basically if you look at the coupler in the up position an S will look like a D does when it is down. You can go onto Micromatic's site and click on beer education and you will find a compatability chart for keg valves/couplers.