Pilot burner, natural gas, with BCR-18 orifice. Non primary-aerated, insert orifice type pilot burner for main burner ignition. Use with Q309, Q340, Q340 thermocouples or Q313 thermopiles. Variety of mounting brackets available. Variety of tip styles to provide desired flame pattern. Interchangeable, color-coded orifice and inlet fittings can be ordered to convert between natural and LP gas. Single tip style. Includes special mounting bracket with screws to convert "B" bracket to "A" bracket. Orifice: BBR-10 (0.010-inch), BCR-18 (0.018-inch).