Foamy Beer

How many PSIs are you using?

 

I would swap the beer lines/faucets with each other to see if the problem stays with the keg or the delivery hardware.

 

We know wheat beers are high carbonated , if the others are less carbonated this could be the culprit, it would be better to dispense these beers using different regulators.

 

Is it possible the beer is over carbed? How long has it been CO2 and at what psi?

 

What about the tap? If it is not clean the imperfections or buildup could be causing disruption that is foaming the beer up...

You switched the lines so a kink in the line shouldn't be a problem, but i'm thinking the tap for now...

I'm not an expert with kegging but in my old system i always ran 3 beers off of 1 regulator and didn't have major differences with carbonation.... they should all be the same no?

 

Close the valve of the wheat beer and dispense some pints while losing some pressure

 

Mmm beer, but I suppose he probably has the pressure release thing right, don't know what is called but mind always had it... Little ring to pull it open..

 

This is most likely your problem. The hop debris is causing the CO2 to become too excited. I've had considerable pressure build up in my kegs while dry hopping (but before adding the gas) . . . it's kicking out the residual carbon dioxide. In your case your three kegs are carb'ed to the same level, but Mr. Hop Debris is fighting you. The problem will correct itself as the debris clears, or you will need to bleed/reduce pressure.

 

Infected?

 

I doubt it but could the bag be anywhere near the post and disrupting flow as it exits the keg? I mean I can't imagine your hop back is a the bottom of the keg, but thought I'd ask..

 

Was thinking something like that, I'm just guessing at things here lol....

 

Quite unlikely, it would be impossible for beer to flow through the tube.