Zurn AquaFlush���� 1.0 gpf exposed quiet diaphragm flush valve for 3/4 in top Spud urinal with 11-1/2 in rough-in. Exposed, quiet diaphragm type, Chrome flushometer valve with a polished exterior. Complete with a chloramine-resistant, dual seal diaphragm with a clog-resistant by-pass. The valve is ADA compliant with a non-hold open and no leak handle feature, high back pressure vacuum breaker, 1-Piece hex coupling nut, adjustable tailpiece, spud coupling and flange for top spud connection. Control stop has internal siphon-guard protection. Internal seals are made of chloramine-resistant materials.