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Leaky co2, do you use duotight connectors on the gas side?

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Slightly off topic, but I notice that EVABarrier now makes a 3mm ID (6.35mm OD) tubing, and the ball lock connectors for same. I'd love to use this, especially for the beer side to further reduce the length of tubing needed for balancing. But I have not found a good way to connect the tubing to shanks, as they apparently do not (yet) have a DuoTight shank fitting for this sized tubing. Anyone with information or ideas?
 
I wonder how well 3mm ID tubing will work. I've been running the 4mm for going on two years now and it works great with 10 second pints at 5.5~6' length. Which is good, because with a 14 cubic foot keezer and a t-tower the kegs in the corners need at least 6' to reach from QD to shank! I expect 3mm ID line at that length would make for a really slow pour...

Cheers!
 
Understood. I have a traditional 8.8 cu ft keezer and front collar-mounted faucets, which fits 6x slim-style Torpedo kegs. The c.6' length requires 2-3 loops per line, which gets a bit messy when you have 6 kegs squeezed together. Would be nice to have a more "direct to keg" style line design, which I think the 3mm lines would provide. (Haven't seen any resistance/length data yet, but it will obviously be significantly less). The lines would also be a lot more flexible.
 
I just plugged 4mm (0.1574798") into Mike Soltys' well-respected line length calculator (the only one worth using imo), and it says with 12 psi, a 1.5' rise, and the default 1.009 SG, one needs just 4.36 feet of line to hit a 10 seconds per pint flow rate. The same calculator says 3mm (0.1181099") ID line needs just 1.08 feet to hit that 10 second pour. Yikes!

Now, only because I have empirical performance to judge, I'd say one could at least multiply those lengths by 1.5X and be in a safe ballpark. But still, a foot and a half of line is pretty darned short :D

Cheers!
 
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