Question: are there different types of keg taps?
Answer: Each distinct "system" requires matching the appropriate keg coupler to the keg valve. In the U.S., there are eight different "systems" in use: "D" System (American Sankey): Most North American beers. Used by breweries such as: Anheuser Busch / Inbev, MillerCoors, Labatt, Molson and domestic craft / micro.