Engineered for performance, Zurn''''s AquaVantage® Exposed Manual Diaphragm Flush Valves provide consistent and reliable water closet operation. They feature a streamlined design while providing high-level performance, unsurpassed water conservation, and long-lasting savings. Each flush valve contains a quiet chemical and clog-resistant GO BLUE® triple-filter diaphragm, reducing maintenance expenses and extending their lifespan. The Z6000AV-HET has a high-efficiency 1.28 gpf flush. AquaVantage® flush valves include a vandal-resistant control stopover, a high-pressure vacuum breaker, a cast wall flange with set screws, and an ADA-compliant no-leak handle. Their advanced features make this line a leading solution for any commercial retrofit or new construction project.