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

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

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This Duotight ball valve can be used as an inline shut off valve on draft lines. 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: KL06934

Item # DUO101
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 48 answers
Why did you choose this?
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Adding another tap
Jason W on Sep 21, 2021
Building a system to inject finings into my kegs without oxygenation risk
Ethan C on Aug 18, 2021
Adding another tap
Jason W on Sep 21, 2021
Reworking my lines
Jeffrey Lee P on Aug 24, 2021
Building a system to inject finings into my kegs without oxygenation risk
Ethan C on Aug 18, 2021
To shut off gas before regulator
Steve M on Aug 14, 2021
I have leaks in my Duotight CO2 system and I'm trying to troubleshoot them.
Sean K on Aug 13, 2021
For my boat
Robert D on Jun 28, 2021
Gas shut off
Victor B on Jun 10, 2021
Turn off gas lines not in use, in case of leaky ball-lock valves when not connected.
Bradley M on Jun 9, 2021
simple fast connections
Brandon M on May 19, 2021
Using this to help do a closed siphon transfer from the fermenter to kegs.
Curt G on May 14, 2021
Using in closed transfer from fermenter to kegs.
Daniel W on Feb 26, 2021
Because sometimes ya just gotta stop the flow.
Lennie R on Feb 12, 2021
to turn off the water
Matthew Sabin on Jan 30, 2021
Sometimes, don't want hose.
Brian S on Jan 7, 2021
Switch between CO2 and Beer gas for stouts
JOE J on Jan 6, 2021
For refrigerator waterline repair
Nathan J on Nov 25, 2020
work nice
MICHAEL E. on Nov 21, 2020
Isolate CO2 lines when not in use
Jason Peterson E on Nov 17, 2020
Need to shut off one gas line.
Robert D C on Nov 4, 2020
This valve is hard to find and unavailable locally.
Valerie H on Oct 20, 2020
right size and connection
Eric on Oct 7, 2020
For a second in line Duotight regulator.
Adam D on Jul 9, 2020
Building a keezer, wanted valves on the beer side
Michael B on Jun 13, 2020
no urgent need, but I am converting to all duotight and got these as "just in case"
Matthew S on Jun 6, 2020
converting kegerator
Anthony M on Jun 5, 2020
make a gas manifold
Dan P on Mar 13, 2020
it fits
James W on Feb 19, 2020
Michael D on Jan 29, 2020
Anthony K on Jan 7, 2020
fits 5/16 poly line
Robert S on Jan 6, 2020
adapt gas lines to 8mm tubing
Ben B on Dec 5, 2019
for counter flow chiller
ben b on Dec 3, 2019
Two keg setup turn off gas when only one keg in system
Zak H on Oct 14, 2019
part of the duotight system
Mark L on Oct 14, 2019
This was the only place I could find a 5/16" ball valve.
DOUGLAS C on Sep 12, 2019
system upgrade
Robert A W on Sep 5, 2019
Fits my new keggerator lines
Steven Kendall on May 2, 2019
Only 5/16 OD push-connect shut-off fitting I can find
Chris on May 2, 2019
Reworking my lines
Jeffrey Lee P on Aug 24, 2021
To shut off gas before regulator
Steve M on Aug 14, 2021
Can this be used as a CO2 shutoff?
Guillermo Jimenez on Oct 29, 2020
BEST ANSWER: Yes it can, as long as you are connecting it to 8mm tubing. The tubing needs to be very round and free of defects. Tubing that is slightly oval in the cross section may leak and you will lose all of your CO2. This happens a lot when the tubing is coiled too tightly and stored or shipped in that state.
If I have this inline with a secondary regulator, do I also need a check valve?
Scherzinger Andy on Dec 23, 2020
BEST ANSWER: If you want to have a check valve you will need an extra one. This valve will allow flow in either and both directions at all times.

4.4 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Rated 5 out of 5
Excellent shut-off valves
I use these to isolate certain lines if I need to refill a container which is empty; it allows me to not have back-pressure and also to not make a mess.
User submitted image
Added Oct 5, 2021
October 5, 2021
3 weeks ago
Rated 1 out of 5
Flimsy. Broke one trying to install one.
June 23, 2021
4 months ago
Rated 5 out of 5
The Bidet I was installing has hot and cold water. I located the cold water ball valve at a local DIY store, but the hot water hose was 8mm-5/16, which I could not find anywhere. Also, the hose hookup on the Bidet was 8mm as well, or I would have just changed it out completely. Searching endlessly until I came across MoreBeer website and I discovered exactly what I needed to complete my Bidet installation. Without the ball valves to control the water pressure, It is like a pressure washer hitting the bullseye. Not a pleasant experience. The DuoTight Push-in Fitting-8mm Ball Valve works great. Thanks MoreBeer, Two Thumbs up!
February 9, 2021
8 months ago
Rated 5 out of 5
coolant systems
I use them to regulate air to my lathe and mill coolant systems
October 20, 2020
1 year ago
Rated 5 out of 5
Perfect little valve
Easy way to connect EVA Barrier tubing. Perfect fitting to help me direct CO2 to purge kegs while fermenting or keep a keg under CO2 pressure while cold crashing.
August 21, 2020
1 year ago
Rated 5 out of 5
Great build, and a useful addition to the keezer build :)
July 9, 2020
1 year ago
Rated 5 out of 5
Awesome affordable connections
These things are great. Instead of buying a 4 -way manifold, just use these fittings and some tubing to build your own for just a few bucks!
September 12, 2019
over 2 years ago