1.1/1.6 gpf, Chrome, Double Flush, Toilet Automatic Dual Flush ValveMfr #: 6065761. 002 Self cleaning piston eliminates routine maintenance. No diaphragms to replace or filter screens to clean. Integral wiper spring cleans the refill orifice with every flush. Delivers reliable operation even with poor water quality Hygienic, touch free operation Flexible Selectronic Platform with programmable sensor Fully Mechanical Manual Override allows valve to flush during a power failure