White-Rodgers Hydronic Zone Valves

For hot-water systems with room-by-room loops, these White-Rodgers zone valves open and close flow on thermostat call. Two-wire 1361 valves run on 24V power-open design, whereas three-wire 1311 valves use powered open and close with 3/4-inch, 1-inch and 1-1/4-inch sweat bodies. F19 motor assemblies service both families without draining the loop.