What psi was this at?I experimented with 1/8" ID polyethylene tubing and I was able to use a 3 foot piece for a decent pour. The problem I have is that all my QB barbs are 5/16".
Say it takes 10 seconds to pour a pint (16 oz). We can calculate the Reynold's # for 3/16" tubing easily enough at this flow rate and find it's 1562, meaning flow is laminar.
For laminar flow, resistance scales with the diameter^-4.
So if resistance is 1.5 PSI/foot with 3/16 tubing, then it's (3/16)^4/(1/8^4) * 1.5 PSI = 7.6 PSI / ft for 1/8" tubing.
Put more simply, it's a factor of 5. So if you need 10 feet of 3/16", you need 2 feet of 1/8" tubing.
Of course, this is all math, not real life, but I'm an engineer, so I of course wholeheartedly believe it.
(Edit: Fun question! Thanks!)
i just purchased some 1/8" ID tubing - I also am wondering where one can find the connection hardware for such a thing?
Rootvonroot: what did you do? Did you find adapters? I want to use 1/8" ID Tygon silver with my keg and party tap.
I am very interested. I saw some 1/8" barb fittings on the internet and Amazon. I am all for avoiding excessive beer line length, when the length is not needed for anything except to give more pressure drop. Bobby M helped me with this with his thread https://www.homebrewtalk.com/f35/17-id-polyethelyne-25-barbs-162964/If anyone needs some I did buy some 1/8 barb x female flare fittings to screw onto flare disconnects.
Rootvonroot: what did you do? Did you find adapters? I want to use 1/8" ID Tygon silver with my keg and party tap.
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