This versatile NSF 61 and ASSE 1017 mixing valve provides the ultimate performance for domestic hot water applications. The 5000 Series ASSE 1017 certification allows for domestic hot water storage at temperatures high enough to increase the effective storage capacity of a water heater,kill harmful bacteria and still be delivered at a safe 120 deg F or less. The valves unique design and advanced thermostatic element ensures a stable mixed water temperature throughout the extended 85 deg F to 176 deg F range.