Using just 0.25 gpf, new high-efficiency urinal flush valves from American Standard offer Selectronic hands-free function, flexible power options, reduced maintenance and reliable performance. Offering 75% water savings compared to a standard 1.0-gpf valve, the sensor-operated flush valves are engineered to virtually eliminate routine maintenance. Each valve employs a self-cleaning piston with integral wiper spring to reduce clogs and upkeep time by facility staff.