Honeywell Zone Valve, 2-Position Low Voltage Normally Closed, Series: V8043, 3/4 in Nominal, Pro Press, 120 psi Static, 24 VAC, 0.32 A, 125 deg F Ambient Water Temperature, 20 psi Differential, Time Cycle: 15 sec to Open, 18 in Lead, Brass, 2-3/8 in W x 6-25/32 in D x 4 in H