Originally Posted by droopy
The extenders are probably just places to get dirty/infected... The longer lines don't effect the carbonation-- just the speed of the beer coming out. A 6 foot line pouring at 6 psi for a low carbonate beer is just a matter of taking like 10 extra seconds to fill a glass vs the 4 foot line... my 2 cents...
In commercial setups, they are usually pushing the same beer over and over, so when calculations for line length are made (which is resistance in the system so you don't deliver foam into the glass) it usually doesn't need to be changed. In my case I want to be able to change beer styles and keep their volumes of CO2 appropriate, so the variable I can adjust is line length.
At a given temperature (my kegorator temp) to maintain a set Vol of CO2, I need a specific pressure. Since both of those are now constants and not variables, my variable is resistance, which is a factor of line length and inner diameter. I'd rather not use different thickness of tubing, so I just made the extensions to give me the ability to control that last variable easily.
They are flare fittings, and I will clean the lines and remove extensions after every keg, so it won't add much work.
And last night I pulled a PERFECT pint. It came out at a nice speed, filled the glass in about 6 seconds with a perfect head on it and the carbonation level is precisely where it should be.
Now I have to finish carbing up my pilsner and double IPA and try them! brewing three batches this weekend to start stocking up so I can keep the five keg slots full.