BURNER, BUNSEN, ADJUSTABLE TIRRIL BURNER (0464) Specially designed burner for use with natural/mixed gas and provides for the control of inlet gas flow. The burner tube is mounted on a stable die-cast, plated steel base with top having flame stabilization 'for improved efficiency in the performance. Tirril Burner- die cast metal base with tap shaped valve for orifice adjustment on the underside of burner tube to control the gas flow Qty :