Balancing CO2 Pressure Between Two Kegs

[Holden4th]

I tend to drink from the one keg while the other one matures in the 2 tap kegerator. The beer I was drinking was pouring perfectly. However, I wanted to see how my FWK English Pale Ale was faring after two weeks in the keg so I poured a small sample. It was a bit gassy but no worries as I just wanted to check the taste.

When I went back to pour the other beer it was so frothy that I had to wait a while before I could drink it. On a hunch I turned off the gas and pressed both relief valves until there was no pressure. then turned the gas back on to repressurise and hopefully equalise. It didn't work.

Some thoughts. I had just kegged an an amber ale and had put CO2 into the air space at the top of the keg in the usual manner it so I could put it in my other fridge to mature. I used the gas line from the EPA. The gas line is a T section metal bayonet type. I am virtually positive that there is no leak because that's what the gauges tell me. The beer is starting to return to normal but it will take a while. The EPA pours faster than the other one

What did I do wrong?
How can I rectify it?
How can I prevent it happening again?

 

[koshari]

I cant see any reason your 2nd keg could have influenced the first unless it had a heap of residual pressure stored higher than the regulators set point. If this was the case check valves would have stopped the 2nd keg from pressurising the 1sr.