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Corbetta, Italy
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The Duoflex series flexible ducts are a system designed specifically for the renovation of old degraded flues. This system, being flexible, ensures easy tubing operations, even if the vertical path is not regular. The Sabiana Duoflex pipes are made from AISI 316 L stainless steel, with two layers: the outer layer is corrugated section that as well as strengthening the structure, acts as a heat sink, while the inner layer is smooth and therefore offers very low resistance to the flow of flue gas and, at the same time, allows any condensate to run back down. 
The Duoflex series includes 11 different inside diameters (from 80 to 300 mm) and a complete series of fittings for connection to the Sabiana InoxMono series elements. 

Further info from manufacturer on DUOFLEX
Further details
The Sabiana flues are available in the twin wall version, in 13 different diameters (100 to 600 mm) and in the single wall version in 11 different diameters (80 to 300 mm). All the versions use AISI 316L stainless steel, 0.5 mm thick for the wall in contact with the flue gas, while the outer wall and all the fixing components are made from AISI 304 stainless steel.

All components in the catalogue are available in stock, except for the larger diameter double wall flues.

As required by the European standards, the production system must be certified by an independent outside institute: Sabiana has chosen the most prestigious of these, IMQ.

Sabiana has been making flues since 1997.

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