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The keg coupler is the piece of draft beer equipment that connects your CO2 tank to your keg so beer can be pumped to your faucet. The bottom of the coupler go on the keg valve. Your gas line is attached to the side hose nipple, while the beer line connects to the top of the coupler. Compatible with US Sankey (D system) keg valves, this coupler will work with the majority of US and Canadian beers, including Budweiser, Michelob, Busch, Miller Lite, Milwaukee's Best, Coors Light, Killian's, Sam Adams, Pete's Wicked, Molson, Labatt, OV, Moosehead, and more. Before ordering, check our complete keg coupler list to make sure the beer you want to dispense uses the D System.