Dublix Engineering A/S can now provide a manual operated unit to carry out a DD-Jet test directly at your plant. The DD-Jet System is for cleaning of the empty passes of the boiler of waste-to-energy plants. DD-Jet achieves 70-120°C flue gas temperature reduction at the boiler outlet. The cleaning is done through holes in the furnace roof by a unique rotating nozzle head creating water jets on the boiler walls.