AO Smith V8043E1145 V8043 Zone Valve, 2-Way, Normally Closed, Straight-Through, 3/4 Inch, MPT, 125 psi, 3.5 Cv, 24 VAC, 50/60 Hz, 0.32 A, 125 deg F Water, 125 psi Differential, Time Cycle: 15 sec Open, 18 Inch Leads, Brass Body/Seat, Stainless Steel Trim, 4 Inch H x 3-23/32 Inch W x 2-3/8 Inch D ? Manual opener (on all