Beer line length for 4912

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drunkatuw

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When I bought a dual tower for my 4912 conversion, it came with 5' of hose connected to each faucet. It seems like lately I'm getting almost a half a glass of foam whenever I pull a pint. I keep the pressure between 10 and 12 psi and the temp around 38 degrees.

Do most people that use a dual tower on a 4912 use the typical 5' of tube that comes with the tower or do most people remove the tube and put on a longer one. I used the equations from this page, http://hbd.org/clubs/franklin/public_html/docs/balance.html, and it seems like 5' would be more than enough.

L= (P-(H*.5)-1)/R
L= (12-(3*.5)-1)/2.7
L= 3.5'

My only other guess would be that the beer line that came with the faucet did not have a resistance of 2.7. I bought some hose before I bought the tower because I wasn't sure if the tower would come with beer lines, so I guess I could give that a shot.
 

Lil' Sparky

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That's what I've got and don't have that problem. Where's the kegorator located at? Is the tower and faucet getting hot? I think this can contribute to a first foamy pour. How's the pour on a second glass immediately after?
 
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drunkatuw

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The second glass is better, but still foamy. The kegerator is in the basement where it's roughly 60 degrees, so it's not extremely warm.
 

Lil' Sparky

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Makes me wonder if your regulator isn't accurate. Try turning it down 1-2 lbs and see if that helps while keeping your beer carbonated enough. Otherwise, swapping out for some longer lines should do the trick.
 

RoaringBrewer

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I tried with the same 5' of line that came with my tower on my 4912 as well... A lot of foam was the result.

Quickly switched it out for... trying to recall here... 8' of line on each tap I believe. I might have even used 10'... Either way. Little-no foam. Perfect pour.

I've served beers between 10psi (bitter) and 15psi (wit) at 40F without issue. The 10psi bitter will pour a bit slower obviously, but its literally 8 seconds to fill a glass compared to the 6 it takes a 12psi beer or 4 it takes a 15psi beer. No biggy...
 

Atl300zx

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i use 12' of line for 12 psi serving pressure, but mine is a keezer.
 
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I'm using the 5' lines that came with my tower. The first pour has a lot of foam, but subsequent ones (within the next several minutes anyhow) are fine. However, I do have to keep my serving pressure around 8-9 PSI, resulting in a rather slow pour. Anything higher than 10 turns my kegerator into a foam generator!

When I'm ready to replace the lines, I will definitely go longer, I'm thinking 8'.
 

Sluggo

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I have 5' or 6' lines on mine (can't remember what I cut them to) and pressure set to 10-12 psi. I have no problems at all with foamy beer on the first pull, but my tower is fairly well insulated with foam tubing.
 
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