Commercial hands-free, dual-flush toilet valves from American Standard, Selectronic valves automatically adjust flush volume, allowing 20% less water consumption than standard toilets. The valves release a lighter flush (1.1 gallons) when motion is detected for less than 60 seconds and a standard 1.6-gallon flush otherwise. Designed for commercial applications, the Selectronic flush valves have a self-cleaning piston to prevent clogging and an electronic valve to store enough energy to close upon loss of power. Flexible installation options are suited for new constructions and retrofits.