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-   -   serving line length issue (http://www.homebrewtalk.com/f35/serving-line-length-issue-153883/)

Hoosier 12-28-2009 06:32 PM

serving line length issue
I am having an issue with figuring out the line length needed for my higher carbonated styles. I keep the fridge at 42F and use 3/16 ID line with picnic taps. According to ProMash I need to keep the gas at 24psi for 3.5 volumes of CO2. How do I calculate the line length using 3/16 ID tubing?
Reading what is posted on Northern Brewers website you need a 5ft length for 10psi to have a "perfect pour." Clearly this is not a linear equation. I tried a 12ft line and still had significant foaming issues. How can I solve this issue?

GilaMinumBeer 12-28-2009 06:43 PM

Teach a man to fish and all that;


Hoosier 12-28-2009 06:58 PM

Perfect, thank you. I didn't see this in the sticky, it should be added.

Scimmia 12-28-2009 07:13 PM

Their examples use 3PSI/foot on 3/16 tubing. Everything else I've read says 2 PSI/foot. I know the material makes a difference, so be aware.

Even figuring 2 PSI/foot doesn't seem to work for everybody.

Hoosier 12-28-2009 07:21 PM

that is what I am running into now. Based on the calculations @ 2psi resistance I need an 11ft length for 24psi with my system. I have a 12ft line that is still pouring too fast. i have more tubing and may just add another 5ft w/a connector and see where that gets me.

IrregularPulse 12-28-2009 08:53 PM

I agree this should be stickied.

malkore 12-28-2009 10:37 PM

I read once in a soda making post, they had a cold fridge, close to 30psi, and it took 22feet of tap line to balance it.
hopefully this gives you some idea of how long you might have to go.

IrregularPulse 12-29-2009 01:35 AM

Ok, I'm trying to set my lines up for top performance. going to 2.5 volumes at 41 degrees. 3.2 foot distance from keg bottom to tap, giving my hose length of 3.2 ft. Now I've not heard of anyone using less than 5 ft! Whats the deal here. Am I way off?

IrregularPulse 12-29-2009 01:01 PM

Just went with 5 ft. Seems to be pouring well.

duffman2 12-29-2009 04:47 PM


Originally Posted by IrregularPulse (Post 1769842)
Just went with 5 ft. Seems to be pouring well.

And I have 5 feet of 3/16 tubing for 42F beer and 2.5 volumes and mine pours like sh*&t! Nothing but foam. I have picnic taps and approximately 4' vertical lift.

When my beer pours, the line at the beginning of the hose (closest to keg) is full of liquid beer. As it gets closer to its final destination (my glass) it becomes foam and is dispensed as nothing but foam. I have played with the pressure and it is doing nothing but giving me a lot of foam really quickly or a lot of foam really slowly. :confused:

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