Open tube systems have been used for many decades, primarily for tempering furnaces. The recuperative burner systems, however, are relatively new.

AVION finned radiant tubes offer a larger surface area considerably improving their heat efficiency and distribution.

Because the fins are thread-shaped, an optimum flame distribution from the burner tip to the tube exit is achieved.

Further advantages of Si / SiC radiant tubes are:

• durability and reliability at temperatures up to 2450°F

• outstanding resistance against:
• thermal shock
• overheating
• oxidation
• carburization
• creep elongation
• corrosive atmospheres
• vibration
• magnetization
• residues of detergents

heat flow: 125 BTU/in²