Marketing InformationManual water closet flush valves optimize performance from the inside to outlast the competition. The GO BLUE® water closet flush valve components withstand corrosive elements up to 10 times longer than traditional rubber components. From there, the chloramine-resistant, triple-filtered diaphragm cuts down on clogs, making it the ideal choice for high-traffic environments. Install the Z6000AV flush valve for reliability in the commercial restroom.