Beer in CO2 lines

[Sea]

Well,.... after years of kegging with no check valves it finally happened with an overcarbed commercial keg.

My question is this:

Is it really a big issue? The gas lines are sealed, pressurized, and were sanitized when they went in. Is there really any risk of infection, or is it more an issue of sticky crap in the lines and possible flavor impact on other beers/Apfelwine?

 

[JuanMoore]

My understanding is that the main issue is fluids getting into and ruining your regulator, so I hope you have at least one check valve there. I think doing a separate check valve for each line is mostly to prevent the contents of different kegs from mingling with each other.