Valemo V2212-A1S Motorized Zone Valve, 2-way, 1/2", Sweat, 24 VAC with End Switch Quick removal of power head with FastFit design. Corrosion-resistant, stainless steel housing. Aluminum cover. Quality tested for over 100K cycles for flawless operation. Heavy-duty motor with all metal gears. 2-way (2 port), 1/2" forged brass valve body, sweat connection | Normally Closed (NC) | Capacity (Cv): 2.5 | Close-Off (psi): 50 Voltage: 24 VAC | Frequency: 50/60 Hz. | End Switch: 24V, 2A | Installation: 18" Lead Wires Works equally well for systems requiring no end-switch feedback (simply not connecting switch wires).