Sistemi Fumari: modello Iso 25

The most classic, the most used of the double-wall systems: ISO 25. AISI 316L stainless steel interior and AISI 304 stainless steel exterior or natural copper, with mineral wool that has a minimum density of 100Kg/m3, pressed and placed between the walls without junction elements which, inevitably, create the phenomenon called “thermal bridging”. Boilers, stoves, fireplaces and any other generator: the applications are countless, thanks to a concrete insulation of 25 mm to protect and to protect you. “Small or very large” chimney systems? No problem: we manufacture up to 1.200 mm in diameter.

Data sheet

    Product marking “CE” according to the European standard EN 1856-1:2009.
    Internal wall: austenitic stainless steel AISI 316L BA (EN 1.4404).
    External wall: austenitic stainless steel AISI 304 BA (EN 1.4301)
     Metal flue systems (ducts, flue pipes, metal chimneys, air conduc- tion) produced by heat generators like atmospheric, pressurized, air blown, traditional or condensing, domestic or industrial kitchen hoods, wood stoves, fireplaces or pellet stoves.
    External or internal installation.


    Internal wall: 80 - 100 - 130 - 150 - 180 - 200 - 250 - 300 - 350 - 400 - 450 – 500.
    External wall: 130 - 150 - 180 - 200 - 230 - 250 - 300 - 350 - 400 - 450 - 500 – 550.
    Available on request internal diameter up to 1.200.
    10 years.
    Do not use for application fields different from those therein ex- pressed: contact our offices for further technical information co- vering different types of generators or applications in the presence of halogen vapor (eg. laundry - ironing - chemicals laboratories).
    We suggest you to strictly follow the indications included in the “use and maintenance handbook” or in this catalogue.


ISO 25 - Stainless steel BA exterior finishing Stainless steel BA exterior finishing
Iso 25 - Natural copper exterior finishing Natural copper exterior finishing
Painted on RAL definition exterior finishing Painted on RAL definition exterior finishing


Flue system/flue-duct resistant up to 200 Pa and wet fumes

Flue system with high temperature, wet or dry fumes
and negative pressure too

Data sheet