Oval flue liners SWO
A compact solution for the renovation of existing masonry chimneys
SWO oval inserts are a stainless steel system designed for renovation of existing brick chimneys and removal of combustion products by natural draft. This category is especially relevant when the shape of the chimney shaft or limited internal space does not allow for the convenient application of a standard round insert. Due to the oval shape, SWO allows for more efficient use of the existing chimney channel and forms a neat smoke removal solution where compactness and precise application in the renovated object are important.
Technical features and materials
The SWO system is designed for gaseous, liquid and solid fuels. It is marked EN 1856-2 T600-N1-W-V2-L50060-G, is suitable for operation up to 600 °C, belongs to N1 natural draft class and is suitable for operation in humid conditions. The inserts are made of stainless steel 1.4404, and their wall thickness is 0.6 mm. The system is resistant to soot ignition, therefore it is suitable for those projects where not only compact installation is important, but also clearly defined technical parameters and operational reliability.
An additional advantage of this system is the clearly indicated oval cross-section correspondence to round diameter. The sizes 100×150, 100×200, 110×230 and 120×240 correspond to round diameters from 130 to 180 mm, making it easier to plan the system throughput and choose the right option according to the needs of a specific heating device.
Key elements and installation options
A big advantage of SWO oval inserts is a sufficiently wide selection of elements, allowing you to form not only a basic insert, but also a more complete renovation solution. The system includes oval insert segments L-1 m, L-0.5 m and L-0.25 m, oval tee 85°, oval drain with blind, transition and oval side condensate collector. Such an assortment allows for more precise adaptation to the geometry of the object, provision of a service location, and resolution of connection or condensate collection issues.
This is particularly important when renovating older fireplaces, where the shape of the shaft and existing construction often require more flexibility than in new builds. The SWO system allows for the formation of a technically consistent solution, maintaining a compact oval geometry while ensuring core operational functions.
Finishing elements and system completeness
The SWO category includes not only the internal elements of the insert, but also the finishing solutions that help to form a complete system. The range includes oval roof, oval roof T, oval spark arrester-deflector and upper holder for oval insert. These elements allow you to neatly finish the top of the chimney, improve protection against precipitation and maintain a consistent system logic from the insert to the top of the chimney.
Such completeness is important not only from a technical but also from a practical point of view, as a user or installer can find not only the insert itself in one category, but also the main components for completing the system.
Why choose SWO
If you are looking for a solution that combines compact form, stainless steel quality, soot ignition resistance and renovation suitability, SWO oval inserts are a very strong choice. This is a system that allows you to reliably renew an existing brick chimney in cases where a standard round insert is not optimal. When choosing a specific option, it is important to assess the dimensions of the chimney shaft, the type of heating device and the necessary additional system elements.
