The Resideo V4043A1010 Zone Valve is designed to efficiently control water flow in heating systems. This 1/2" valve has a sweat connection and runs on 120V with a two-position actuator control, assuring dependable operation. With a flow coefficient of 3.5 Cv and a pressure rating of 125 PSI, it effectively handles water distribution in your system. https://www.partshnc.com/v4043a1010-resideo-12%22swt-120v-nc-35cv-zonevlv