CO2 lines that are flexible?

[storytyme]

Hey everyone. Quick question. I want CO2 lines that are flexible and easy to manipulate even when cold. Most are flexible at room temp, but in the keezer they stiff up and are a pain. Any suggestions are appreciated. Thanks.

 

[day_trippr]

I switched all of the beer and gas lines in my brewery to EVABarrier tubing ~18 months ago and haven't had any issues wrt its stiffness in either my keezer or the three fridges. I used the 4mm ID for beer and 5mm ID for gas. That tubing replaced the conventional 3/16" ID solid PVC (Bevlex 200) I used for ~14 years which was way bulkier (7/16" OD vs 5/16" for the EVA) which doesn't sound like much but if you do the math there's a lot more plastic per foot...

Cheers!

 

[Ki-ri-n]

EVA barrier tubing for gas & beer. Really flexible.

 

[storytyme]

EVA barrier tubing for gas & beer. Really flexible.

Thank you!
Do you have a link for it?

 

[renstyle]

Just search for "EVABarrier" 4mm or 5mm ID.

These lines are designed for use with duotight fittings.

I opted to use 4mm all around for both gas and beer, same fittings for everything. Works well.

https://www.williamsbrewing.com/Hom...ystem/532-EVABarrier-Beer-Tubing-39-foot-roll
https://www.brewhardware.com/product_p/evabarriertubing4mm55.htm
https://www.morebeer.com/products/evabarrier-double-wall-draft-tubing-4-mm-id-8-od.html

 

[storytyme]

Just search for "EVABarrier" 4mm or 5mm ID.

These lines are designed for use with duotight fittings.

I opted to use 4mm all around for both gas and beer, same fittings for everything. Works well.

https://www.williamsbrewing.com/Hom...ystem/532-EVABarrier-Beer-Tubing-39-foot-roll
https://www.brewhardware.com/product_p/evabarriertubing4mm55.htm
https://www.morebeer.com/products/evabarrier-double-wall-draft-tubing-4-mm-id-8-od.html

Awesome! With the 4mm size, what length of beer lines are you using to get a nice pour? And what PSI are you at?

 

[day_trippr]

6.5 feet at 11 psi here. Perfect pours, even with flow meters at the keg ends...

Cheers!

 

[renstyle]

Awesome! With the 4mm size, what length of beer lines are you using to get a nice pour? And what PSI are you at?

I went with ~8ft of 4mm to dispense at 12-13 PSI. Mostly because I had 2 taps and about 16ft of extra tubing, so I halved it.

http://www.mikesoltys.com/2012/09/17/determining-proper-hose-length-for-your-kegerator/
Mike's calculator put me at 6.26ft for a 12 second pour at 12PSI.

4mm ID is 0.1575 inches (for the calculator).

 

[stevetreesh3]

Hey everyone. Quick question. I want CO2 lines that are flexible and easy to manipulate even when cold. Most are flexible at room temp, but in the keezer they stiff up and are a pain. Any suggestions are appreciated. Thanks.

I switched to silicone tubing

 

[Tallgrass]

Silicone for co2 is frowned upon (permeability, hardening and strength) in the aqaurium hobby. I carried that into homebrewing. I use silicone on my slop sink faucet and it swells considerably somewhere under 50 psi and into a open 3/8 barb.

I've switched to Eva barrier and duotight fittings for gas and liquid. Happy happy.

 

[Bobby_M]

I switched to silicone tubing

Silicone tubing for CO2 will oxidize the beer in a couple days. It's about the worst tubing to use for this purpose.

 

[DuncB]

Keep the silicon tubing for hot liquid transfers, keg lines is a no no. Unless perhaps to connect your cask ale to beer engine and then that will be oxidising anyway as open to the air. But even then you'd be better off with a stiffer tube.