Honeywell Zone Valve, 2-Way Low Voltage, Series: V8043, 1 in Nominal, C, 125 psi, 8 Cv, 24 VAC, 0.32 A, 50 to 200 deg F Water Temperature, 8 psi Differential, 18 in Lead, Brass, 4 in H x 3-11/16 in W x 2-3/8 in D