Duotight Push-In Fitting - 8 mm (5/16 in.) x 1/4 in. Flare

Duotight Push-In Fitting - 8 mm (5/16 in.) x 1/4 in. Flare

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This Duotight fitting with 1/4" Flare is perfect for flared gas and beverage ball lock and pin lock disconnects. It can also be used to connect gas line to the flare fitting found on the KOMOS® CO2 Regulator. Compatible with EVABarrier 8 mm OD Tubing (D1717 & D1718).
The Duotight fitting does not require a flare washer. See the instructions below for how to ensure a leak-free connection when attaching to flare fittings.
Duotight fittings are high-quality push-in fittings that seal tight and offer superior sealing capacity due to the double O-ring sealing design.
High Performance Double O-Ring Design:
The secret to Duotight’s superior sealing performance comes from the fact that they use not one, but two high-quality EPDM O-rings.  The double O-ring means they have literally twice the sealing surface when compared with other push-in fittings.  This makes them more reliable and significantly reduces the chance of leakage.
The double O-ring system also means that tubing can be bent at a much tighter radius without causing leaking issues, which can be an issue with other fittings.  This combination of factors makes Duotight the most reliable push-in fittings on the market.
EPDM offers excellent chemical resistance for a longer life span. When compared with silicone and vinyl, EPDM has much better gas transmission rates, better wear resistance, and is BPA-free.
No Clamps Necessary!
We recommend cutting your tubing straight, not on an angle, to ensure the line forms a complete seal. To remove the fitting simply push in the collet and the hose can be removed.
  • Insert tubing and firmly push to connect
  • Easily release tubing by pushing in the collet
  • Suitable for both gas & beverage applications
  • Made from food-grade acetal plastic
  • Double O-rings made from highly chemical resistant EPDM
  • Locking teeth made from stainless steel
  • Pressure rated to 150 psi
  • Temperature rated to 212°F (100°C)

Please note: exposure to chlorine will degrade the acetal plastic and stainless steel these fittings are made from. Do not use in contact with bleach or other chlorinated cleaning chemicals.

Ball lock fitting and regulator not included.

Kegland Part number: KL06880


Item # DUO106
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.05 LBS

Community Q&A

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Browse 5 questions Browse 5 questions and 59 answers
Why did you choose this?
MoreFlavor Store
Fitting for beer and CO2 lines
Daniel W on Feb 26, 2021
Upgrade beer fridge from old to new
Gregory K on Feb 20, 2021
Fitting for beer and CO2 lines
Daniel W on Feb 26, 2021
Rocky K on Feb 25, 2021
Upgrade beer fridge from old to new
Gregory K on Feb 20, 2021
To adapt fittings to Duotight
Tom W on Feb 18, 2021
Gas connections and distribution for my kegerator.
Daniel W on Feb 16, 2021
Duotight fittings are so easy & don't leak.
Jason S on Feb 15, 2021
making closed transfer system and duotight seems better
Donald Richard G on Feb 3, 2021
need it
james w on Jan 16, 2021
I have some already and prefer it
Dennis M on Jan 12, 2021
Hoping to shorten line and reduce foam
Tremaine Hart on Jan 11, 2021
love these
Hector Tellez on Jan 8, 2021
Hose too empty.
Brian S on Jan 7, 2021
trying on kegs
Angel S on Jan 7, 2021
duotite stuff is great -
Cameron J C on Jan 6, 2021
Need one more for extra gas post
JOE J on Jan 6, 2021
redoing my kezzer and want to simplify my system heard of these on Brulosophy
Paul K on Jan 6, 2021
new keg, need a connectot
Matthew Sabin on Dec 29, 2020
To upgrade my gas connects
Kaleb C on Dec 28, 2020
Best deal outside of Australia
Ken S on Dec 24, 2020
Excellent reputation
Richard Anderson on Dec 23, 2020
Easy removal and it fits evabarrier tubing.
John B on Dec 21, 2020
just wanted it
James H. on Dec 15, 2020
Keezer build. Reviews were good for it.
Steven B on Dec 15, 2020
to connect EVAbarrier 4/8mm line
James B on Dec 11, 2020
Corny keg jumper
Kurt H on Dec 10, 2020
to fit tubing
john Bell on Dec 9, 2020
to make a corny jumper
Kurt H on Dec 5, 2020
Need for my keg connections
Donald Sargent on Dec 3, 2020
Michael E on Nov 21, 2020
It was on my son's Christmas wish list.
Karen V on Nov 17, 2020
Ease of connection
Jason Peterson E on Nov 17, 2020
Fitting together a spunding valve for pressure fermentation... like to do things myself
Dean L on Nov 12, 2020
Need this to transfer from the fermenter to the keg.
Richard W on Nov 11, 2020
I heard about these products on Brulosophy
Anthony C on Nov 6, 2020
Tired of tasting vinyl tubing
Jason Taclas on Nov 4, 2020
No Leaks
Eric H on Oct 31, 2020
Ive read good comments in Brülosophy about the duotight and eva barrier
Andres D on Oct 25, 2020
I plan to switch my gas lines to these
Charles E on Oct 22, 2020
why not try it?
Timothy O on Oct 20, 2020
Converting Gas/Liquid lines to Duotight Fittings
Sean K on Oct 13, 2020
Michael N on Oct 10, 2020
No more worm clamps!
Jeffrey Hasterok on Oct 8, 2020
for spunding valve and gauge
anthony r on Oct 2, 2020
These fittings are fantastic!
Keegan M S on Sep 30, 2020
converting draft system to DuoTight fittings
Tom D on Sep 25, 2020
trying to start this kegerator off on the right foot
Joseph on Sep 24, 2020
replacing old equipment
Matthew Sabin on Sep 17, 2020
easier cleaning
Dennis W on Sep 15, 2020
to set up spunding valve for fermentation of mead
Jose A on Sep 10, 2020
something new
Joe J on Sep 4, 2020
Rocky K on Feb 25, 2021
To adapt fittings to Duotight
Tom W on Feb 18, 2021
Instead of trying to mate this BSP fitting to a NPT fitting, shouldn't we just get the H853, which is actually NPT? Then a regular DUO106 should screw right on the male flare from the H853? I'm suspicious of trying to use a BSP male in an NPT female.
Jeffrey Hasterok on Oct 22, 2020
Duotight Push-In Fitting - 8 mm (5/16 in.) x 1/4 in. Flare
Duotight Push-In Fitting - 8 mm (5/16 in.) x 1/4 in. Flare
Brass Flare Fitting - 1/4 in. Flare x 1/4 in. MPT
Brass Flare Fitting - 1/4 in. Flare x 1/4 in. MPT
Duotight Push-In Fitting - 8 mm (5/16 in.) x 1/4 in. BSP
Duotight Push-In Fitting - 8 mm (5/16 in.) x 1/4 in. BSP
Do these fittings work with any tubing or do I have to "retube" my kegarator with the EVA tubing?
Clifton Shoemaker on Jul 10, 2019
BEST ANSWER: You would need tube inserts to use these fittings on soft vinyl tubing.
I see how this attaches to tubing. How does it attach to the ball lock keg fitting?
david semo on Sep 23, 2019
The DUO106 connects to a 1/4" flare fitting. It threads onto MoreBeer's KEG720, KEG730 or others with a 1/4 male flare fitting. I didn't use a washer with theKEG730. Also I picked up a foot of 8mm (5/16") tubing at the local Ace Hardware for 19 cents, since I was only using the DUO106 with the Blotie FE960 spunding valve and there was to be no contact with beer.
Anyone have any luck converting the barb gas outs to 1/4 flare on the Elite Series Four Product Secondary Regulator with this adaptor? If converted, then would work perfectly with a duotight DUO106
Jeffrey Hasterok on Oct 15, 2020
Duotight Push-In Fitting - 8 mm (5/16 in.) x 1/4 in. Flare
Duotight Push-In Fitting - 8 mm (5/16 in.) x 1/4 in. Flare
Brass Flare Fitting - 1/4 in. Flare x 1/4 in. MPT
Brass Flare Fitting - 1/4 in. Flare x 1/4 in. MPT
BEST ANSWER: I made the change over one year ago and everything has worked great. Make sure you also replace the existing plastic gas line with new duotight plastic gas line. In my case, I added duotight fittings and plastic lines for both the gas in and beer out.

4.7 / 5.0
22 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Simple, versatile, no leaks.
Simple, versatile, no leaks.
February 26, 2021
3 weeks ago
Rated 5 out of 5
Super easy, can’t believe I haven’t used it before
February 11, 2021
1 month ago
Rated 5 out of 5
Work great
Easy to use and absolutely no leaks !
January 30, 2021
2 months ago
Rated 5 out of 5
Easy to use
I love duotight fittings. They are extremely easy to use and provide a leak free seal.
October 26, 2020
4 months ago
Rated 5 out of 5
Finger Tight Plus 1/4 Turn, Any More Will Wreck The Fitting
Disappointed with the installation instructions... that say finger tight plus 180º (1/2 turn) more. I did exactly that with a quality CM Becker ball lock but found it distorted the Duotight and pulled the plastic threads. I ruined one fitting by exactly following those instructions... Subsequently, I found the ideal torque is finger tight plus 90º (1/4 turn) more. That seals properly, keeps the fitting intact, and it doesn't back off the threads... Five stars for the part - Zero stars for the installation instructions.
October 9, 2020
Rated 5 out of 5
A system-wide upgrade worth making
This small, cheap, easy device is simple and quick to install, works flawlessly, and makes life a lot easier than hose barbs, which seem like caveman tech now that I'm living that ~duotight life~. Grab this, and never look back
September 29, 2020
11 months ago
Rated 3 out of 5
Ease to use fittings
Easy to make leak-proof connections but after using them once, one of the teeth that holds tubing broke off on all of them. I used one for holding about 25 psi on fermentation and another one for pressure testing at 5 psi. I think the spec for these are rated higher than the pressure I used at. Didn't really stress them or yank of the tubes. Seems like manufacturing defect.
September 11, 2020
6 months ago
Rated 5 out of 5
Brilliant engineering
This and all Duotight fittings are good upgrades from standard swivel nut attachments along with Evabarrier tubing. No more forcing thick tubing onto the QD and clamping down. Takes the drudgery out of the routine disassembling and cleaning of draft lines.
August 4, 2020
7 months ago
Rated 5 out of 5
As Expected Quality & Fast Delivery
Just what I wanted and expected!
July 26, 2020
7 months ago
Rated 4 out of 5
Easiest way to secure EVABarrier tubing for gas in or product lines.
These are fantastic fittings that allow EVABarrier tubing users a quick, leakproof gas in or product out connection for your keg connections. They can also quickly create a "piggyback" transfer line for pressure transfer to a keg from another keg or you could use them to build a cleaning rig to clean up your serving lines in a keezer. Just put your solution in a pressurized growler and a small inline pump - clean your lines quick. Lots of uses, so get a lot of these little guys if you're using EVABarrier tubing.
July 12, 2020
8 months ago