Sloan Service Sink Flushometers Quiet, Exposed, Diaphragm Type, Service Sink Flushometer with the following features: ADA Compliant Metal Oscillating Non-Hold-Open Handle with Triple Seal Handle Packing 1 I.P.S. Screwdriver Bak-Chek Angle Stop Vandal Resistant Stop Cap Adjustable Tailpiece Vacuum Breaker with Flush Connection High Copper, Low Zinc Brass Castings for Dezincification Resistance Non-Hold-Open Handle and No External Volume Adjustment to Ensure Water Conservation Handle Packing, Stop Seat and Vacuum Breaker molded from PERMEX Rubber Compound for Chloramine Resistance