Sloan Valve RESS-C-1.6/1.1 SX-0458412 Faucet Valves, Black/Chrome For Sloan Royal and Regal Flushometers Features: High Chloramine Resistant PERMEX Synthetic Rubber Diaphragm with Linear Filtered Bypass and Vortex Cleansing Action ADA Compliant OPTIMA Plus Battery Powered Infrared Sensor for automatic "No Hands" operation Infrared sensor with multiple-focused, lobular sensing fields for high and low target detection Latching Solenoid Operator