Kegerator Forum: Guinness coupler check valve - HELP!!!

Posted:  14 Mar 2013 02:19
First time post, fairly new kegerator owner... in need of a little help!

I got a keg of Guinness in for St. Pat's. I got it all hooked up and noticed I had a leak on the air side. I found the leak at the connection of the air line to the coupler. I tightened the nut and it didn't help. The U coupler has a weird check valve with metal insert.

I have this coupler...

http://www.micromatic.com/draft-keg-beer/taps ...

...and I set it up according to the chart under "replacement parts". I used the check valve, the metal insert, and the standard coupling washer. After finding the leak, I turned off my nitro and untapped. After disconnecting the air line, I took the metal insert out and re-tapped - no leak!

Do I need this metal insert? If so, what am I doing wrong?
Posted:  15 Mar 2013 04:51
Resolved...
Posted:  20 Mar 2013 22:38
What was the issue?