Coldrink 2-MC System improves the taste of fountain beverages and helps retain carbonation. Also reduces taste and odor of offensive contaminants. 20" prefilter reduces dirt and particles and helps maximize the life of MC cartridges. System includes water shut-off, flushing valve, and inlet/outlet pressure gauges. Sanitary cartridge replacement is simple, quick, and clean. Internal filter parts are never exposed to handling or contamination.