Duotight Push-In Fitting - 6.35 mm (1/4 in.) x 8 mm (5/16 in.) Reducer

Duotight Push-In Fitting - 6.35 mm (1/4 in.) x 8 mm (5/16 in.) Reducer

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This Duotight reducer fitting can be attached to the Intertap Short Shank with 1/4" Duotight compatible barb (D1242). Compatible with EVABarrier 8 mm OD Tubing (D1717 & D1718). Also attaches to the Plastic Ball Lock Cap, allowing the cap to be used with 8 mm OD EVABarrier.
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.

Kegland Part number: KL07481

Item # DUO100
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - Out Of Stock
Weight 0.05 LBS
Community Q&A

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Browse 4 questions Browse 4 questions and 12 answers
Why did you choose this?
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I use Duotight fittings for a lot of things
Raymond Paul L on Jan 24, 2023
for taps
aaron w on Dec 15, 2022
I use Duotight fittings for a lot of things
Raymond Paul L on Jan 24, 2023
I had one develop a small split in the seam which leaks beer in the kegerator.
Timothy S on Jan 13, 2023
for taps
aaron w on Dec 15, 2022
I'm changing my beer lines over to duotight/eva
Dave B on Nov 10, 2022
works with beer faucet
wes m on Nov 7, 2022
Trying it out with my Keezer
Scott T on Nov 2, 2022
Need it
richard A on Oct 7, 2022
The one that came with my kegerator had the 6.35mm locking collar absent. So it wasn’t usable.
Erik D on Sep 14, 2022
need more
Daryl T on Sep 3, 2022
The usual reason... right? I mean, there is ONLY ONE reason to buy this, right guys?
Ron N on Aug 30, 2022
I picked this because the one that came with my new tap would not seal.
Daniel Collins on Aug 25, 2022
James M H on Jul 21, 2022
To use
Troy P on Jul 9, 2022
For use with Carbonation cap
Iain M on Jun 23, 2022
So I could use my Williams Warn Counter pressure filler
R Harris on Jun 2, 2022
Great product
Patrick S on Jun 1, 2022
Better lines on my kegerater
Jesse G on May 25, 2022
Easy install
Scott T on Apr 28, 2022
These work!
Kenneth D H on Apr 20, 2022
To connect to a Kegland mini regulator so I can use a soda stream co2 tank
Fernando S on Mar 30, 2022
converting a used kegerator to new/modern beer lines
David J on Mar 10, 2022
going full duotight for portable setup
Nicholas W on Mar 9, 2022
Better then heating and pushing
RANDALL B on Mar 5, 2022
I want to convert my keg to Duotight
Jesse A on Mar 4, 2022
for counter pressure filler
Stephen Goadhouse on Feb 26, 2022
Assembling a draught system .
Merlinus Monroe on Feb 21, 2022
I need it
Chris E on Jan 22, 2022
To route to water filter
Kelvin z on Jan 22, 2022
Recommended by Zack
Anders H on Dec 7, 2021
ease of use
Tina B on Dec 3, 2021
Compatible with my systems
Juan Castillo on Dec 2, 2021
Simple, reliable connection
kent gore on Nov 24, 2021
keezer and fermentation fridge parts
George S on Nov 17, 2021
Much easier to connect in a right cramped tap tower.
Jonathan N on Nov 16, 2021
Adding another tap
Jason W on Sep 21, 2021
Connect taps
Scott on Aug 4, 2021
required for Duotight compatible picnic tap
Antonio Martinez on Jul 2, 2021
because the duo-tight beer faucet required it.
Dennis W K on Jun 16, 2021
Want it
Pat L on Jun 5, 2021
I need it to complete my install.
Timothy Rawlings on May 15, 2021
Changing over from stainless flare fittings to duotight.
Nick Parker on Apr 21, 2021
join eva tubing with 1/4 barb
Quinlan G on Mar 6, 2021
Upgrade beer fridge from old to new
Gregory K on Feb 20, 2021
Ease of use
Valued C on Jan 26, 2021
Purchased a Kegmenter. Need to dispense from it.
Alex A on Jan 12, 2021
Hoping to shorten line and reduce foam
Tremaine Hart on Jan 11, 2021
need new tubing. like this idea
john Bell on Dec 9, 2020
Running low and love using duotight fittings
Tina B on Nov 21, 2020
Tired of tasting vinyl tubing
Jason Taclas on Nov 4, 2020
Ive read good comments in Brülosophy about the duotight and eva barrier
Andres D on Oct 25, 2020
I had one develop a small split in the seam which leaks beer in the kegerator.
Timothy S on Jan 13, 2023
I'm changing my beer lines over to duotight/eva
Dave B on Nov 10, 2022
Would this connection work on the liquid tube of the Blichmann Beer Gun?
Michael Dat Nguyen on Dec 22, 2019
BEST ANSWER: Hi Michael, we recommend using EVABarrier 8 mm OD Tubing with this fitting.
Is this barb compatible with the Duotight system fittings, specifically the Duotight Push-In Fitting - 6.5 mm (1/4 in.) x 8 mm (5/16 in.) Reducer?
Ray Matherne on Jun 24, 2020
Duotight Push-In Fitting - 6.35 mm (1/4 in.) x 8 mm (5/16 in.) Reducer
Duotight Push-In Fitting - 6.35 mm (1/4 in.) x 8 mm (5/16 in.) Reducer
Stainless Tailpiece - 1/4 in. (Elbow)
Stainless Tailpiece - 1/4 in. (Elbow)
BEST ANSWER: Hi, I mistakenly asked a separate question, but is there a unit like this that does connect to a PTC adapter for a liquid line?
Does this work with any shank? Or does it have to be duo tight shank
jeff kiefer on Nov 7, 2022
BEST ANSWER: I used it on a barb style shank, but I cut off the barbed section with a dremel first. After cutting, there was just enough straight length left to use the duotight adapter. YMMV, but mine's been working fine for years.
Does this connection work on a smooth stainless steel 1/4” beer tower or does it need a groove to keep from sliding off?
Kevin Allyn on Oct 22, 2022
BEST ANSWER: I think this should work on a smooth fitting as the dual o-rings inside the fitting provide some pressure against the tubing, but the internal metal barbs may not be as effective for holding it on as they would be if there was a groove.

4.6 / 5.0
17 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
DuoTight Reducer
I have found a multitude of uses for these reducers. They essentially convert 1/4-inch tubing to 8mm EVAbarrier tubing. For example, I used them to convert my WilliamsWarn Counter Pressure Bottle Filler to 8mm DuoTight and EVAbarrier.
February 27, 2023
1 year ago
Rated 2 out of 5
Came loose at a critical moment
It came loose, and it was a pain in the neck to set up in the first place. It sprayed beer everywhere inside my kegerator. Now, I have to reattach it. Clever idea, and hopefully it will work right the second time.
February 24, 2023
1 year ago
Rated 5 out of 5
Love me some duotight
November 28, 2022
1 year ago
Rated 5 out of 5
Work well when you need a reducer
Does what is supposed to do. Hold on to the faucet shank stem as well as the Kegland style plastic ball lock stems. Used the ball lock stems on the back of the Komos kegerator for gas.
November 25, 2022
1 year ago
Rated 5 out of 5
Super useful for KegLand's counter pressure bottle filler
I bought some of these for my new KegLand counter pressure bottle filler and couldn't be happier. They attached easily and haven't leaked even after detaching & reattaching them several times.
October 18, 2022
1 year ago
Rated 3 out of 5
Possibly wrong size
This seems like it will be a good product and I plan to switch my connections to duotight. However, the product that was sent along with my EVA 8 mm OD tubing that II ordered did not fit. It did fit on the shank properly, but was much too large on the other end for the EVA tubing that was in the same order. I suspect that I was sent the wrong size connecter because both the product description and the EVA tubing description state that this should work. I ended up using stepless clamps this time, but do plan to switch.
December 2, 2021
over 2 years ago
Rated 4 out of 5
Easy to use, quick and simple.....Love it
Just pushing the tubing in and your are done connecting this duothig fittings. Love it.
September 29, 2021
over 2 years ago
Rated 5 out of 5
Duotight Push-In Fitting - 6.5 mm (1/4 in.) x 8 mm (5/16 in.) Reducer
No complaints..does what its supposed to do
June 10, 2021
over 2 years ago
Rated 5 out of 5
Duotight fittings make setting up your kegerator a breeze
March 21, 2021
over 3 years ago
Rated 5 out of 5
Works as advertised
This connects the Intertap faucets to the EVA 4mm lines. This is basically a reducer to run the EVA lines. It works as advertised but make sure you buy a extra because if you make a mistake and have to pull the adapter out, the prongs break easily. It's cheap enough to have extras laying around just in case.
February 28, 2021
over 3 years ago