Commercial lavatory mixing valves mix hot and cold water in under-the-sink installations to minimize the risk of scalding. Water mixing valves regulate the exact temperature of hot and cold water to the users specified temperature. The water temperature must be adjusted by the installer using a thermometer to measure the hot water temperature at the faucet outlet.  Mixing valves are required in most commercial lavatories, mixing valves can balance water temperature to push button and electronic self closing faucets.
VMS stocks mixing valves from Bradley, Chicago, Kohler, Moen, Sloan, Symmons, Powers, Leonard and others.