Twin Wall

Terminals

Article Code: 103.Z

The Twin Wall Zara Cowl is the component that is installed as protection against bad weather, at the top of a flue.

Its design ensures the free flow of smoke and gases, preventing the entry of rain even in a heavy downpour.

Inner Wall: Stainless Steel 316L BA (EN 1.4404 - L50) thickness 0.5 mm

Outer Wall: Stainless Steel 304 BA (EN 1.4301 - L20) thickness 0.5 mm or 0.6 mm thick Copper.

Disks and Fixture Inside: Stainless Steel 304 BA (EN 1.4301 - L20), respectively, in thicknesses of 0.5 mm and 1.5 mm.

Welding: longitudinal TIG process for the fusion of adjoining pieces, without filler.

Belling: cold moulding, done with a mould and counter mould hydraulic expansion system ensuring calibrated joints with a tolerance of +/- 2mm.

Accessories: triple lip silicone gasket to ensure the joint is sealed; locking band to secure the joint and ensure the continuity of the system.

Evacuation of the products of combustion resulting from wood-burning, multi-fuel appliances. Especially indicated in fairly or very windy areas.

For the designation of the chimney system according to UNI EN 1856-1 the following is allowed:

Operation: dry (D) or wet (W).

Pressures: Positive (P1 = 200 Pa), Negative (N1 = 40 Pa).

Operating temperatures: ≤ 200 ° C with silicone gasket and P1 = 200 P; 600°c without silicone gasket and N1= 40Pa.