The Water Heater Tempering valve mixes cold water from the supply with the hot output from the heater for effective hot water storage. This allows water to be stored at 140 F, mitigating the risk of Legionella bacteria in the tank. Adjustable temperature control limits output to 120 F and prevents the risk of scalding. Installation kits include the lead free valve, temperature gauge and (2) ProPush flexible connectors for easy integration with the rest of the system. The product is guaranteed for life.