Duotight Push-In Fitting - 8 mm (5/16 in.) Tee

Duotight Push-In Fitting - 8 mm (5/16 in.) Tee

In Stock
Delivers to ( change ) by as part of our Fast & Free Shipping.
Faster Shipping Available. Details.
60 day no hassle return policy. Details

This Duotight fitting makes it easy to split your gas line and run it to multiple kegs. Use one tee for a dual tap kegerator or two tees for a triple tap. You can also pair the tee with the Push-In Pressure Gauge to use the gauge with the BlowTie Spunding Valve. Compatible with EVABarrier 8 mm OD Tubing (D1717 & D1718).
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: KL02387

Item # DUO109
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.05 LBS
Community Q&A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 19 answers
Why did you choose this?
MoreFlavor Store
Installing gas lines
Don C on Feb 28, 2023
Going Duotight across the board for fermenting and draft systems
Quinn H on Dec 21, 2022
Installing gas lines
Don C on Feb 28, 2023
Always get a tee!
Greg M on Jan 18, 2023
Going Duotight across the board for fermenting and draft systems
Quinn H on Dec 21, 2022
Converting to push in fittings
Carl S on Dec 16, 2022
To split water line two ways
Elmer N on Dec 6, 2022
Using in my Keezer to split my gas line to different kegs
Eric C on Oct 20, 2022
Splitting a cold water line to a dispenser and another keg
Ben D on Oct 19, 2022
michael h on Sep 23, 2022
Husband asked for his 39th b-day gift
Kaila S on Sep 22, 2022
Changing my keg system to use only DuoTight and EVABarrier
Lloyd M on Sep 20, 2022
ease of use
Kristoffer W on Aug 27, 2022
James M H on Jul 21, 2022
Possibly support both sparkling and still water output
Ben D on Jul 20, 2022
jockey box
hideki arao r on Apr 28, 2022
more parts
Mark L on Apr 22, 2022
Revising gas distribution in kegerator
Justin R P on Apr 21, 2022
Complete rebuild of gas side in my Kegerator.
Trevor W on Apr 6, 2022
Using EVABarrier tubing and cheaper than buying a secondary reg.
Valued C on Apr 6, 2022
Upgrading gas lines, making a keezer
Preston G on Mar 16, 2022
converting a used kegerator to new/modern beer lines
David J on Mar 10, 2022
I want to convert my keg to Duotight
Jesse A on Mar 4, 2022
Robert F on Feb 8, 2022
Read good reviews
Frederick C on Jan 31, 2022
I need it
Chris E on Jan 22, 2022
changing to duotight gas ines
Nicholas L on Jan 5, 2022
Gas setup
Stephen L on Dec 30, 2021
very good system easy to use
Nancy N on Dec 29, 2021
I can use these to quickly split my gas line to service several kegs at the same pressure.
Scott on Dec 23, 2021
Gas manifold, also to attach pressure guage to line to see actual pressure
Peter Dietz on Dec 2, 2021
gas splitter for duotight system
Antonio Martinez on Dec 1, 2021
Refrigerator water line to Keurig split
Stephen D on Nov 20, 2021
Changing my gas distribution system.
Joe Ormand on Nov 15, 2021
Updating gas side to DuoTight
Joseph Dauria on Nov 13, 2021
Part of a gas manifold for an 8 tap kegerator build.
Kyle Heon on Nov 2, 2021
Like that you can quickly connect and take apart
Todd on Nov 2, 2021
Like duotitght switching to multiple CO2 regulators like this product
Mike on Oct 27, 2021
Adding another tap
Jason W on Sep 21, 2021
Albert L on Sep 14, 2021
Add pressure gauge after flow stopper
Kurt H on Aug 28, 2021
For a dual keg gas line.
Steve G on Aug 24, 2021
Pressure fermentations and transfers
Will A on Aug 4, 2021
Setting up a kezzer and it's the cheapest solution for multiple gas outlets.
Christian Aguilar on Jul 8, 2021
It's a tee fitting
Victor B on Jun 10, 2021
Fits with other duotight fittings I already have.
Roy Ventullo on Jun 10, 2021
These fittings are outstanding.
Robert J on Jun 9, 2021
Want extras
Nicholas C T on Jun 3, 2021
Part of a Duotight Secondary Regulator build.
Tysen Bibb on May 29, 2021
Just started using Duotight products and they work really well!
Chris Dornbach on May 21, 2021
simple fast connections
Brandon M on May 19, 2021
In order to split a single regulator into two kegs for serving two kegs at one time
Timothy S on Apr 6, 2021
Always get a tee!
Greg M on Jan 18, 2023
Converting to push in fittings
Carl S on Dec 16, 2022
I currently have Bevflex 5/16 ID X 9/16 OD Beer Line Hose and Gas Line Hose (blue & Red). Will Duotight fittings work with this hose?
Steven J on Jul 19, 2022
Duotight Push-In Fitting - 8 mm (5/16 in.) Tee
Duotight Push-In Fitting - 8 mm (5/16 in.) Tee
Duotight In-Line Regulator with Gauge
Duotight In-Line Regulator with Gauge
Gas Board for Duotight In-Line Regulators - 4 Output
Gas Board for Duotight In-Line Regulators - 4 Output
BEST ANSWER: These are made to work with 8mm EVAbarrier tubing which is a more rigid type of tubing than most beer line hoses and it has a much smaller OD than your 9/16 hose. There are DuoTight fittings that will work with (or adapt to) 1/4-inch OD tubing (0.635mm) and 3/8-inch OD tubing (9.5mm) though.
does this item include the 3 pieces of tubing pictured or is it just the gray fitting?
Dominick Dufner on Aug 7, 2020
BEST ANSWER: Just the fitting is include. The tubing is extra. Make sure you insert a nice round piece of tubing. Tubing that has been bent or formed around too tight of a radius may have a set in an oval cross section and will not seal reliably.

4.9 / 5.0
9 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
ready for a three way?
So simple. one gas tap for two kegs. No need for a manifold with this.
May 24, 2023
3 months ago
Rated 5 out of 5
DuoTight Fittings
As with all of the DuoTight fittings, these work exceptional well.
February 27, 2023
3 months ago
Rated 5 out of 5
I used this in my setup for the “nukatap counter pressure bottle filler” coming from the regulator, to the counter pressure bottle filler and then to the keg itself using Duotight QD’s.
November 15, 2022
6 months ago
Rated 5 out of 5
Duotight Push-In Fitting - 8 mm (5/16 in.) Tee
Easily connects and seems to work well
July 31, 2022
10 months ago
Rated 5 out of 5
Love it. Switching over to duotight type fittings. I ordered a couple this last time but one doesn't grab on to hose just pulls back out. Im sure its just bad fitting but overall love em. All others work excellent!!
User submitted image
Added Mar 2, 2021
March 2, 2021
over 2 years ago
Rated 5 out of 5
Quickly measure (twice), cut tubing once, press in to connect and create your plumbing masterpiece. 10 for 10 on one-step connections with no leaks.
February 26, 2021
over 2 years ago
Rated 5 out of 5
Work as advertised. Easier to deal with than barbs.
February 14, 2021
over 2 years ago
Rated 4 out of 5
Duotight is a great way to go if you're just getting into kegging!
I used Duotight Tees and Duotight FFL (Flare) fittings in my keezer project. They are easy to use. I suggest you get the tool to cut the tubing line square and seat the tubing completely in the fittings - (I used some Star San to lubricate the tubing for insertion). They will work great unless you're turning a very sharp curve - avoid those. Best of all, you can disengage the fittings and reuse them. Great stuff...the cutter is the only special tool needed.
July 12, 2020
over 2 years ago
Rated 5 out of 5
Easy to use. Works well.
January 28, 2020
over 3 years ago