The 1-Way Ball Valve Mixing Station is an ASSE 1055 certified chemical proportioner that accurately dilutes chemical to the required ratio and dispenses into any size container. This venturi injection system uses city water pressure (25 - 125 PSI) to draw and blend chemical concentrate into the water stream and precision metering tips to set the dilution ratio. Ball valve activation allows for hands-free dispensing. Choose a factory-set flow rate at the time of order (Bottle Fill, Low Flow, High Flow).