Yesterday my son n law said when he went to pour a beer the beer just trickled out of the tap. When I got home I checked it and there was beer in the co2 line . I disconnected the line to dump the liquid out . I took off the regulator and took the connectors off and used my air compressor to blow out the liquid. I tried to take the main housing apart but it wouldn't come apart. Luckily I have another regulator . So I hooked it up and back in business. Now sitting here at work I thought how did it get to the regulator on the tank but not effect my secondary regulator .