Flexible flue pipes
Flue pipe


Metallic flue pipes B-Flex

Flexible conduits in stainless steel with smooth inner wall

The flexible system B-FLEX is composed of elements with circular section that comply with the European UNI EN 1856-2 law. It is suitable for exhaust fumes.

A special sleeve is required when working under positive pressure up to 200 Pa (P1 class)and temperatures up to 200°C . This sleeve is available in both JOINT (cod. JA140) and DRIVE (cod. GA140) systems.

As far as temperatures up to 450°C are concerned, planning must ensure the correct functioning under natural draught (N1 class). In that case please use the following sleeves: Joint series cod. JA138 or JA139 – Drive series cod. GA138 or GA139.

The symbols P1, W, V2, clearly quoted both in the label affixed on the pipe and in the D.O.P. (Declaration Of Performance), unequivocally indicate that this particular flue system is definitely suitable for condensing state-of-the-art boilers.

Its installation and matching with various boilers must be left to skilled professionals that will respect the standards and laws in effect.

This product will be the installer’s or designer’s first choice since it can be perfectly matched with:

Flexible flue system B-FLEX

The features of this system are quoted in the “Declaration Of Performance – D.O.P” (to download the D.O.P simply click on the image at the bottom of this page).
A full comprehension of the D.O.P ensures a correct use of this product.
Should you need further information please feel free to contact us.

Flexible flue

System B-Flex

Only for Ø80 Ø100 Ø120 Ø130 Ø140 Ø150 Ø160

Be Flex

All diameters

Be Flex



Elements, resistance etc.


Assembly instructions


Methane gas


Steams of cooking


Complies with UNI EN 14961-2

Diesel oil