Zurn Z6003-WS1-YB Aquaflush Exposed Flush ValveExposed, quiet diaphragm-type, chrome plated flushometer valve with a polished exterior. Complete wtih 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, one 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. This WS1-YB model includes a 1.0 Gallon Low Consumption and a Sweat Solder Kit.Zurn Z6003-WS1-YB Aquaflush Exposed Flush Valve Features:; Low consumption flush; 1.0 gallon for urinals; Compare to Sloan Regal 186; Sweat Solder Kit