14 to 16 lbs for Miller Lite ?

[Brad5980]

Problem: Based on the research I have done I am having CO2 bubbles break in my beer lines that float up from the coupler and also form a pocket of bubbles behind the faucet. As a result my first & sometimes second pour is at least 4 inches of foam. I have changed every washer, gasket, etc. I have adjusted the pressure and temperature from a low of 5 lbs to a high of 14lbs.

It appears that I can stop some of the bubbles from forming in the line when I ramp the pressure up to 15 lbs or so, which minimizes my head to less than 2 inches and keep the temp at 33-34 degrees.

I actually get the most bubble build up in my lines when I have the temp set at 38 and the pressure at 10 lbs.

What is causing these bubbles? Is it a pressure/temp issue?

The odd thing is that it never did this with Pony Kegs on full size kegs.

thanks

[Scott Zuhse]

Calibrate your thermometer. When you decreased the bubbles by adjusting to 15, this tells me that your temperature is much higher than you note. These bubbles are the actual carbonation breaking out of solution due to not enough pressure against the beer based on temperature. At retail, this is a technique that draught technicians use to balance the system. Slowly raise the pressure (after quickly opening and closing the faucet)in one pound increments until the bubbles no longer rise or collect. They know that they have achieved equilibrium.

Scott Zuhse, Instructor Micro Matic Dispense Institute

[Brad5980]

Thanks for the response. My thermo was actualy off by 7 degrees. I lowered it to a true 34 and reinsulated my tower. Perfect pours! Thanks

[tamib59]

As a bartender from 'way back', It has been my experience that Miller Lite is always the foamiest beer.

[Beer Dr]

As a bartender from way back you probably tended bar in estabishments that had air shaft sytems the were having temp issues. I have found if I install a system which maintains 38 degrees from the keg to the faucet , I have no problem with Miller Lite or any other product!

[AGENT5309]

I am pouring into plastic 16oz cups and get a beautiful 38 degree beer.