Naval Concealed Urinal Flushometers Quiet, Concealed, Adjustable Piston Type, Rough Brass Urinal Flushometer with the following features:ADA Compliant Metal Oscillating Non-Hold-Open Handle Self-cleaning Xpelor ® Bypass Adjustable Tailpiece Vacuum Breaker Flush Connection Exposed parts Chrome Plated Ultra High Copper, Low Zinc Brass Castings for Dezincification and Salt Water Resistance Handle Packing, Stop Seat and Vacuum Breaker molded from PERMEX Rubber Compound for Chloramine Resistance