Honeywell 1/2″ direct ignition dual automatic combination valve, 24vac, single stage, standard opening, 3.5″wc regulator setting, 20-200 cfh capacity, 1/2# pressure rating, 1/8″ pressure tapping with plug, for use with hot surface and direct spark systems, includes one 3/4″ straight flange, one 1/2″x3/8″ reducer bushing, lp conversion kit