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

In Stock
60 day no hassle return policy. Details

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 3 questions Browse 3 questions and 58 answers
Why did you choose this?
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replacing old equipment
Matthew S on Sep 17, 2020
to set up spunding valve for fermentation of mead
Jose A on Sep 10, 2020
replacing old equipment
Matthew S 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
To also use in my keezer
Alex C on Sep 3, 2020
To add a dedicated CO2 line at the kegerator for a counter pressure bottle filler
Jason T B on Sep 3, 2020
Ease of transfer
Jeff H on Sep 3, 2020
Changing my equipment for my kegerator.
Mike D on Sep 2, 2020
Highly recommended
Kevin C on Sep 1, 2020
Kegs need fittings :)
Carl Harrris on Aug 20, 2020
Ease of use and cleaning.
Terry P on Aug 13, 2020
good reviews
Michael Murdy on Aug 7, 2020
Thomas T on Aug 1, 2020
connect filter to corny
Kurt H on Jul 25, 2020
Wanna try it out
Shaun J on Jul 22, 2020
fits on my ball locks
Kurt H on Jul 20, 2020
To go with the Evabarrier tubing.
Michael D on Jul 8, 2020
Looks more convenient than clamp fittings
Willow D on Jul 1, 2020
Trying it out, seems easier
Brian OKeefe on Jun 30, 2020
I'm using Duotight fittings everywhere and you can't have enough of these.
JC on Jun 22, 2020
look easy
Erik H on Jun 20, 2020
Need it to complete nitro set up
James Clark on Jun 17, 2020
I burn through these things! They're super useful and I expect to need more
Adrian L Febre on Jun 13, 2020
go with the EVABarrier tubing, add quick connection
Gregory G on Jun 12, 2020
I'm tired of messing with hose clamps worrying about leaks and cutting off tubing when I need to replace it
Matthew B on Jun 11, 2020
Part of DuoTight manifold build
Joseph M on Jun 11, 2020
Required to upgrade standard ball lock connectors
Matthew J M on Jun 11, 2020
converting all lines to duotight
Matthew S on Jun 6, 2020
converting kegerator
Anthony M on Jun 5, 2020
well made, good value
Joseph S on May 30, 2020
Compatible with 4mm ID EVABarrier Tubing which I wanted for proper balance over a very short run.
Matthew K on May 28, 2020
Been meaning to check out duotight fittings and happened to need one of these for a spunding valve
Michael B on May 4, 2020
easy to use
Sebastian on May 2, 2020
fitting for spunding valve
John L A on Apr 28, 2020
Easy and quick to use!
Michael G on Apr 24, 2020
Bought this to change and upgrade my draft system.
John C P on Apr 14, 2020
Always need more, love these.
Reid G F on Mar 25, 2020
regulator adaptor for use in gas manifold
Dan P on Mar 13, 2020
for new tap, seems easier than Oekiter
Roger M on Feb 20, 2020
To make changing lines much easier.
Joseph Dauria on Feb 7, 2020
Easy Installation
Steven Z on Feb 5, 2020
Michael D on Jan 31, 2020
To have push to connect on all fittings in my new kegerator
Kevin Ramey on Jan 25, 2020
simplicity, ease of use
Mark F on Jan 24, 2020
These make setting up the komos kegerator a breeze!
Jennifer M on Jan 1, 2020
Better pours, and easy to work with.
Charles Wier on Dec 14, 2019
Trying something new, looks easy
Mark D on Dec 13, 2019
Make a jumper
Dwain Pannell on Dec 13, 2019
Setting up new draft system
Joseph M on Dec 10, 2019
adapt for ball lock keg fittings and manifold fittings
Ben B on Nov 30, 2019
easier cleaning
Dennis W on Sep 15, 2020
something new
Joe J on Sep 4, 2020
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.

4.6 / 5.0
16 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
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
2 weeks ago
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
2 months ago
As Expected Quality & Fast Delivery
Just what I wanted and expected!
July 26, 2020
2 months ago
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
2 months ago
Great product
quick and easy install. 8 installed with no leaks.
April 2, 2020
6 months ago
Great product quality, no leak!!!
March 30, 2020
7 months ago
Works great
These push-in fittings work great with the EVA tubing.
February 27, 2020
7 months ago
Sometimes you need a washer
Sometimes requires a flare washer for metal male flare fittings. Yes, I followed the instructions, hand-tightend the fitting, checked for leaks, turned 180 degrees with a wrench, checked for leaks, etc. Would only seal with a washer. Of course it works with pin or ball lock adapters, they have a built-in washer.
February 19, 2020
It's always good to use the right products to do the job
Recently I bought an Intertap tower system from my local homebrew shop. The kit came with line and pinch clamps to use over all of my barbed fittings. This was not the right way to hook it up and as a result of many leaks I spent a few pennies and did it the right way. I don't regret it for a minute. I'm finally leak free!!
January 31, 2020
8 months ago
Super simple to use. No issues.
January 28, 2020
8 months ago