Tube passage d.18 De Dietrich 97939290

This passage tube with an 18 mm diameter is used in boilers and burners to route gases, liquids, or air between components. Its precise dimensions ensure a secure fit and proper flow characteristics, which are critical for efficient combustion and heat transfer. Whether it serves as a flue gas passage, air intake, or water connection, this tube is designed to withstand the thermal and mechanical stresses of heating equipment. When original tubes become corroded, cracked, or blocked, replacing them restores system performance and safety. A common spare part for boiler maintenance and burner repair, this tube is compatible with many models.