A, G, M & U System Keg Couplers
Shop specialty keg couplers for European and international beer systems. Our A, G, M, and U system couplers are built for commercial bars, breweries, and distributors handling imported and specialty kegs.
- A System – Used for most German lagers including Paulaner, Spaten, and Warsteiner
- G System – Used for Carlsberg, Tuborg, and select European imports
- M System – Used for Schneider Weisse and other German wheat beers
- U System – Used for Guinness, Harp, and other Irish/UK stout kegs
Specialty Coupler FAQ
How do I know which coupler system my imported keg uses?
Your distributor can confirm the exact valve system for the brand you're serving — it varies by brewery and sometimes by market, so don't assume based on country of origin alone. If you tell us the brand, we can usually confirm the right system.
Is U-system the same as S-system?
No — they're different valve systems. Guinness, Harp, and Kilkenny use U-system specifically, while S-system covers beers like Heineken, Amstel, and Stella Artois. The couplers are not interchangeable.




