The 1-Way Hands-Free Mixing Station is a foot-lever-activated venturi chemical proportioner that accurately dilutes chemical to the required ratio and dispenses into any size container. When the foot lever is depressed, this system uses city water pressure (25 - 125 PSI) to draw and blend chemical concentrate into the water stream. The dilution ratio is set using the included precision metering tips. Choose a factory-set flow rate at the time of order (Bottle Fill, Low Flow or High Flow).