The 5000 Series Taco Mixing Valve is a dual purpose mixing or diverting valve. It is ASSE 1017 approved, providing shut-off reliability on either a hot or cold water supply failure. The high flow and low headloss characteristics make the 5000 Series ideal for domestic water, radiant applications, installations with large variations in flow rate and supply conditions, and installations requiring tightly controlled water temperature. The valve’s unique design and advanced thermostatic element ensures a stable mixed water temperature throughout the extended 85° – 150° F range. The 5000 Series provides fail-safe security and ultimate performance in a mixing valve.