When you have it adjusted correctly the water and media run out at about the same time and the vessel is empty. The cone (#31) is at the bottom of the tank and the pipe(#26) is the inlet for the water/media. The distance between the cone and the end of the pipe is what controls the amount of water/media entering the blast hose. It doesn't clog....I've logged about 30 hours of use so far and haven't had a clogging issue. I've even left a half pot full sitting for a week and went back and powered it up and immediately went back to blasting with no problem.