American Standard 6065.161.002 Electronic Flatwise 1.6 GPF Exposed Toilet Flush Valve, Chrome,American Standard,6065161.002" /> 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 ADA compliant Exclusive Pressure Compensation feature allows the flush valve to deliver a constant flush volume regardless of water pressure Flush valve can not be adjusted to deliver more or less water, ensuring water savings and performance Electronic flush valve with selectronic proximity system for hygienic hands free operation Stadium Flush-valve delivers short flush every 2 minutes during periods of high use