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10% Off $100+: Use promo code LASTCHANCE10 at checkout. Sale items excluded. Promotion excludes bar rails, kegerators, growler filling stations, glycol power packs and gift cards. Cannot be combined with other offers/promotions. Offer valid through Monday, December 17 at 11:59 p.m. EST.

KegWorks - ITEM # DTC340U

Guinness Stout Keg Coupler - U System

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In stock and ready to ship.

Hook this U System coupler up your keg and gas tank to start dispensing your favorite, creamy stout.


    Serving creamy stouts like Guinness calls for special draft beer equipment, including this U System keg coupler.

    The keg coupler is in charge of connecting your gas tank, keg, and beer line. In the case of Guinness, you will need a gas tank with a 75% Nitrogen/25% CO2 gas blend. When you operate the black plastic handle, gas is pushed into the keg, which then forces the beer through up your plastic beer line all the way to the faucet. If your coupler is not attached properly, your system will not dispense as it should.

    This keg coupler fits U System keg valves, which is what you’ll need for popular stouts such as Guinness, Harp, Kilkenny, and more. You won’t be able to dispense these stouts with a standard US Sankey (D System) keg coupler. To make sure the beer you want to serve uses the U System, refer to our complete coupler guide.

    Made of nickel-plate brass, the Guinness Stout Keg Coupler is durably constructed and is great for both home or commercial bars. You’ll find it’s very easy to install and operate.

    • U System keg coupler
    • Connects the gas tank, keg, and beer lines to allow for pressurized dispensing
    • Used for serving Guinness, Harp, Kilkenny, and other stouts
    • Made from nickel-plated brass
    • Black plastic lever handle
    • Easy to install and operate
    • Perfect for home or commercial use
    • Click here for a complete list of beers

    Free Expert Support


    Contact Customer Care
    • System: U system keg valves
    • Material: Nickel Plated Brass
    WARNING: This product contains a chemical(s) which is known to the state of California to cause cancer or birth defects or other reproductive harm. For more information go to
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    Would you recommend this product?
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    Would you recommend this product?
    Yes! I would recommend this product.
    5 / 5
    5 / 5
    So easy to assemble
    I got the keg coupler and the tap, got my cylinder of Nitrous and C02 mix and went on the journey of putting it all together. 10 minutes later, I had cold beer. No fuss, no mess, just working first time.

    March 28, 2017
    Atlanta, GA, US
    1 year ago
    Questions & Answers
    Start typing your question and we'll check if it was already asked and answered. Learn More
    Browse 7 questions Browse 7 questions and 42 answers
    Why did you choose this?
    Kegworks Store
    The only one that was shown
    Eugene M on Dec 1, 2018
    They had the widest variety of accessories to choose from.
    Kevin R on Nov 18, 2018
    The only one that was shown
    Eugene M on Dec 1, 2018
    For Smithwicks's kegs.
    John D on Nov 30, 2018
    They had the widest variety of accessories to choose from.
    Kevin R on Nov 18, 2018
    You had the coupler listed for Guinness
    Brian L on Nov 9, 2018
    I like Beer
    jan p on Oct 23, 2018
    Dispense Smithwicks
    Robert P on Oct 17, 2018
    If you have a taste for Guinness Stout, you will need this keg coupler to tap the keg.
    Francis H on Sep 7, 2018
    Needed for Smithwick's Ale Kegs
    Dave M on Aug 24, 2018
    I need it to tap into my favorite fall flavour!
    John B on Sep 4, 2017
    Halfway to St. Patrick party
    Bill S on Aug 30, 2017
    Fits Smithwicks!
    Steven M on Aug 29, 2017
    For Harp and Guiness Beer at my home bar.
    Andy R on Jul 22, 2017
    Based on price and reviews
    Aubrey P on May 24, 2017
    To convert our current keg-orator to pour Guiness!
    Jenna M on May 15, 2017
    Wanted to be able to tap a Smithwicks keg.
    Ron B on Feb 23, 2017
    I love Guinness !!!!
    Herbert E on Jan 18, 2017
    Smithwick's Keg in my kegerator
    Francis M on Dec 6, 2016
    I picked this item since the world has so many different tap types. I love irish beer and cannot live without a tap that will help me access beer from imported kegs
    john daniel b on Nov 6, 2016
    Specialty Coupler for Guinness Keg System
    Tony D on Oct 18, 2016
    Michael S on Oct 15, 2016
    Because we got a keg of Smithwicks and didn't have the necessary U-type coupler.
    Edward G on Aug 15, 2016
    raymond c on Jul 5, 2016
    Because I needed it!
    Don L on Apr 12, 2016
    For Smithwicks's kegs.
    John D on Nov 30, 2018
    You had the coupler listed for Guinness
    Brian L on Nov 9, 2018
    Does this work for the new Guinness Nitro IPA?
    If not do you know what tap I need for the IPA.?
    Conrad C on Jan 26, 2016
    BEST ANSWER: If it's a Guinness keg, you will need a Guinness tap.
    smithwicks ale- does it use co2 or nitro mix?
    doreen k on Jul 23, 2017
    BEST ANSWER: We just finished a Keg of Smithwicks. It uses CO 2 only.

    Guinness requires a mix of Nitrogen (75%) and CO 2 (25%).
    Does the handle of this keg coupler clear the lip on the new style Guinness 1/6 barrel?
    andy f on May 2, 2016
    BEST ANSWER: Most liquor stores in my area have been able to confirm that the 20L keg of Guinness is now available upon request. The prices I am hearing are right around $100. I know that isn't a discount, but from my understanding not many 1/6 kegs are priced in our favor.

    Some stats on the Guinness 1/6 (20L) Keg:

    Weight: 57 lbs
    Height: 23 inches
    Width: 9.3 inches
    Shape: Round, Steel Drum
    Coupler: "U" system coupler (same as other Guinness kegs)
    Are they any o-rings or any other pieces that need to be in the connection or gas line connection?
    Kevin S on Feb 27, 2018
    BEST ANSWER: The gas/air line connection does not need an additional gasket. Those are typically secured with a screw clamp. Your beer line connection will need a rubber washer. Our beer line jumpers include the connectors and washers. We also sell the washers separately. They are good to have on hand to replace lost or warn washers.
    Rubber Washer for Beer Line - Set of 6
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    5' Vinyl Hose Jumper - 3/16
    5' Vinyl Hose Jumper - 3/16" ID - Stainless Steel Connectors
    Air Line Jumper - 5/16
    Air Line Jumper - 5/16" ID - 5' Vinyl Hose w/ Screw Clamps
    Does anyone know the beer line connector for this? Im having trouble putting a wing nut American standard line connector to this coupler
    A shopper on Jan 6, 2017
    BEST ANSWER: The wing nut will not work. Get the following beer line KegWorks - ITEM # 600-60

    Beer Line Jumper 5' w/connectors. I have a Guinness connector and this works just find. Alternatively, you can buy beer line, an assortment of connectors, clams and rubber washers, but I am pretty sure the KegWorks premade Jumper line will work.
    What type of metal is this item made from?
    A shopper on Jul 16, 2017
    BEST ANSWER: This U-coupler is made from nickel plated brass.
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    About Backorders

    This item is currently out of stock but we're expecting more soon.

    For an estimated ship date, please contact Customer Care at 877.636.3673 or email

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