I've been researching a bit and came across this contradiction or maybe I did not understand it?
Although it is about carbing a keg it went on to talk about line length and how foam is caused by the lack of co2 not too much...
This *article/link states:
https://www.baderbrewing.com/articles/corny-keg-carbonating-instructions
But this calculator as well as others here, recommend longer lines than say 4'
http://www.mikesoltys.com/2012/09/17/determining-proper-hose-length-for-your-kegerator/
Excerpt from that *link and makes me ask.
If you have a keg set to 12 p.s.i and push it through a 3/16" line for 4' does that mean you will have Zero pressure at the end or at the faucet?
*Beer line pressure loss:
For every foot of length of your 3/16” beer line coming out of your keg, there is a pressure drop of 3 PSI due to the restriction of the hose. This is the most common size beer line hose used in a home environment. That means for every 4 foot of hose, there is a 12 PSI drop in pressure when the beer gets to the faucet (and your beer glass). If you have less pressure coming out of your regulator, you WILL have foaming problems! Remember this when you are setting up your kegging system. Longer hoses will require higher pressures to dispense properly
Larger diameter hoses have less pressure loss, and are commonly used in long lengths of hose in commercial environments. In these cases, a long line of hose is used for the majority of the distance, with a short line of 3/16” connected at the end of the run.
For every foot of ¼” hose there is a pressure drop of .85 PSI per foot, and for every foot of 5/16” hose there is a pressure drop of 0.4 PSI per foot.
Moreover
Kegging tips:
- Your beer MUST be cold to absorb Co2. Under 50º will work, but cooler is better for absorbing Co2. You cannot carbonate beer above about 55º
- Contrary to popular belief, foaming is caused by low Co2 pressure, not by high Co2 pressure. Most foaming is a result of your Co2 regulator being set under 8 lbs of pressure. Occasionally it is also caused by a partial blockage of the outlet hose or connectors.