The Resideo AM100-1LF Mixing Valve is a high-performance 1/2" NPT valve used to control water temperature in a variety of HVAC systems. It combines hot and cold water to produce a consistent temperature output ranging from 70°F to 145°F, ensuring safe and enjoyable water use. This valve is built to last, with a sturdy Teflon-coated, nickel-plated brass body and EPDM rubber seals. https://www.partshnc.com/am100-1lf-resideo-12-npt-mixingvlv-70145f