1/2"x1/2" direct ignition dual automatic combination valve, 24vac, single stage, step opening, 10"wc full rate 4"wc step setting regulator setting, straight through body pattern, 30000-415000btu, 1/2# pressure rating, 1/8" pressure tapping with plug, ffor use with hot surface, direct spark systems or gas fired appliances, includes lp conversion kit, 3/4"x1/2" reducer bushings (1), 3/4" straight flange (1)