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Old 03-11-2009, 05:36 AM
AsylumDC AsylumDC is offline
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Default Volume per foot of beer line?

I'm trying to understand the cost benefits of line traps. To do so, I'd like to know how much beer by ounce is contained in each foot of beer line. If anyone knows, I'd like to know the figures for 1/4, 3/8 & 1/2 lines. I figure in my 30 feet of beer line, I gotta be losing at least 1-2 full pints everytime I do a keg change. Any thoughts?
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Old 03-11-2009, 07:14 AM
reliefdvm reliefdvm is offline
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Some quick math say's

1/4" = 1/3 oz. per foot
3/8" = 3/4 oz. per foot
1/2" = 1.3 oz. per foot
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Old 03-13-2009, 06:15 PM
MrPalmer MrPalmer is offline
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You can always invest in FOBs to solve the waste problem. When you finish a keg off gas fills the FOB. A float valve in the FOB falls down and blocks off the line keeping the beer line completely filled. Thats way you don't waste a drop
You just tap a new keg on, fill the FOB with beer and away you go pour pour pour.
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Old 03-14-2009, 05:28 AM
TAPMAN TAPMAN is offline
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I believe that when he said "line traps", he was talking about FOBs
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Old 03-14-2009, 11:22 AM
DCullender DCullender is offline
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Easy way to determine amount of beer lost with each keg change is to measure the amount of foam poured through the line before clear beer is poured. Foam is 1/4 beer, so if you through out 1 pitcher of foam it is equal to approx. 15 ounces of beer.
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Old 04-29-2009, 10:27 PM
Thomas518 Thomas518 is offline
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figure it out do the math. what you're looking for is the volume of a cylinder which what a beer line is. formula would be pi r squared times the height or (length of the line)
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Old 05-01-2009, 08:11 AM
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cubby_swans cubby_swans is offline
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There's a chart on this link that tells you the volume of beer in a line, in ounces, per foot of line, citing various diameter lines.

Troubleshooting Draft Beer Systems for Line Balance Troubles.
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