Tube Firing Burners Eclipse offers a range of indirect-fired furnace type burners for applications including continuous lines, tempering, hardening, annealing, galvanizing, liquid heating, quench tanks and wash tanks. Tube Firing Burner (TFB) Bayonet Recuperator Bayonet-Ultra Recuperator E-Jector Single Ended Radiant Tube Burner (SER) ImmersoJet Single Ended Radiant Tube Burner (SER) ImmersoPak