1/2" continuous pilot dual automatic combination valve, 24vac, standard opening, 3.5" wc, 20000-2000000 btu capacity, 1/2# pressure rating, 1/8" pressure tapping with plug, for use in gas fired and standing pilot appliances, includes lp conversion kit, one 3/4" straight flange, one 1/2"x3/8" reducer bushing, one 3/4" angle flange