American Standard Ultima™ Manual Toilet Flush Valve, Piston Type, 1.6 gpf 6.0 Lpf Size:1.6 gpf 6.0 Lpf heavy duty construction that endures Category_Pellets heavy duty construction that endures natures elements 4 oz spray per 1000 cu ft of air space water saving operation and time saving maintenance and care 1 gpf) when installed on an American Standard universal bowlElectronic flush valve with Selectronic® proximity system for “Hands Free” operation Self Cleaning Piston with wiper spring helps prevent clogging and reduces maintenance Positive seal ensures leak free performance Fully Mechanical Manual Override Button can flush toilet during a power outage Fail Safe Operation valve automatically closes on loss of power or water pressure Sanitary Flush valve automatically flushes after 24 hours of non use to clean fixture & maintain trap seal State of the Art electronics are immune to outside light Watertight design ensures dependable performance Range can be adjusted manually or with the optional remote controlCan be installed left or right handed ADA compliantRecommended working pressure 25 psi (flowing) to 80 psi static