This Resideo Mixing Valve is a plumbing device designed to regulate the temperature of water in heating systems. The valve has a 1/2 inch union sweat connection and operates within a temperature range of 90 to 130 degrees Fahrenheit. The product is constructed with lead-free materials, ensuring compliance with safe drinking water regulations. It features a compact design for easy installation and an adjustable knob for precise control over water temperature. The valve's primary function is to mix hot and cold water to achieve desired temperatures, preventing scalding or freezing conditions in various applications such as radiant floor heating, domestic hot water, and hydronic heating systems.