Two-way, Straight-through All models may be installed without disassembling the valve Compact construction for easy installation Complete powerhead may be removed or replaced without breaking plumbing line connections or draining the system Actuator motor may be replaced without removing the valve body or draining the system Valve designed for cycling (not constantly powered on) applications ON-OFF and two-way lowVage valves consist of an actuator and valve assembly for controlling the flow of hot water and some models for steam. - Manufacturer: HONEYWELL Honeywell Zone Valve 3/4 In Sweat 2 Way 24 Volt