If you are looking to an alternative to cutting tubing and pressing it over hose barbs with hose clamps, with the resultant difficulty in dissassembly, you might find the DuoTight System interesting. Based on double O ring sealed push in fittings, DuoTight allows easy repeated hose attachment and removal, as well as EVABarrier lined odorless tubing that costs no more than economy PCV tubing.
DuoTight features a patented dual O ring sealing system using high quality EPDM o-rings. The double o-ring means DuoTight have twice the sealing surface surface when compared with other push in fittings. This makes DuoTight even more reliable and reduces the chance of a leak. The double o-ring system also means that you can bend the hose with much tighter radius without causing leaking issues.
Clamps are not needed. To use the DuoTight System, simply cut your EVABarrier tubing to length (cut tubing square for best results, not at an angle), and push into the DuoTight fitting. To remove the tubing, simply press back on the sealing flange and pull the hose out. EVABarrier Hose and DuoTight fittings are rated up to 100 PSI.
Save your regulator! This in line check valve prevents backflow, and fits 8mm exterior diameter EVAbarrier tubing. It releases at a low 2 PSI making it perfect for gas lines. Also compatible clear liquids like water, but not recommended for beer, wine, or coffee.
Compatible with: - EVABarrier 4mm ID x 8mm OD line (item Z91)
- EVABarrier 5mm ID x 8mm OD line (item Z92)
DuoTight features a patented dual O ring sealing system using high quality EPDM o-rings. The double o-ring means DuoTight have twice the sealing surface surface when compared with other push in fittings. This makes DuoTight even more reliable and reduces the chance of a leak. The double o-ring system also means that you can bend the hose with much tighter radius without causing leaking issues.
Clamps are not needed. To use the DuoTight System, simply cut your EVABarrier tubing to length (cut tubing square for best results, not at an angle), and push into the DuoTight fitting. To remove the tubing, simply press back on the sealing flange and pull the hose out. EVABarrier Hose and DuoTight fittings are rated up to 100 PSI.
Save your regulator! This in line check valve prevents backflow, and fits 8mm exterior diameter EVAbarrier tubing. It releases at a low 2 PSI making it perfect for gas lines. Also compatible clear liquids like water, but not recommended for beer, wine, or coffee.
Compatible with: - EVABarrier 4mm ID x 8mm OD line (item Z91)
- EVABarrier 5mm ID x 8mm OD line (item Z92)
Aug 28, 2023 by Steve
Q: Where is the best place to put these on the lines? I have 8 taps in total. Would one suffice, or should there be one on each of the lines near the kegs? Thanks
A: One would suffice near the regulator
Jun 21, 2019 by Jeremy
Q: In the description, it states it releases at 2 PSI. What do you mean by that?
A: The check valve is activated at 1.5-2 Pounds per Square Inch.
Great check valve
I bought this to use on the in-feed water line for my continuous seltzer setup in my keezer. Works great preventing CO2 escaping and still allows the water to come in fine. Also, can’t beat the simplicity of these fittings!
Duotight 8mm Check Valve
Love all things duotight... have made keg gas/liquid connections so much easier!