Domestic Flue Systems
DW25 Twinwall flues
SW04 Singleskin flues
Flexible liners warranty
We are a leading UK supplier of small-diameter flue components and flue liner.
Retailers, merchants and installers of domestic chimney systems and wood-burning stoves choose A1 Flue Systems.
4 reasons to choose A1.
- The quality of our products
- Our competitive prices
- Our next-day delivery
- The warranty we offer on all our flexible liner
A one-stop shop.
You name it, we can supply it. That’s because we’re a one-stop shop specialist in twin-wall insulated flue systems, single-wall flue systems, cowls, chimney fans, core vents, stove fans and carbon monoxide detectors.
Fully CE Marked
We manufacture our own products and also source high-specification pipes, ends and bends (as well as brackets). This ensures that all our small-diameter flue components, which start in size from 80mm and go up to 200mm, are fully CE Marked, so quality is assured.
DW25 Twin Wall Flues
Twinwall DW25 Flue Pipe Length.
Our high-quality twinwall DW25 flue pipes are made from 316-grade stainless steel (inner wall) and 304-grade stainless steel (outer wall).
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They prevent typical thermal bridge problems by providing the optimum draught via the continuity of the installation, as well as offering excellent insulation to maximise appliance efficiency. The DW25 twinwall system is suitable for appliances using wood, coal, gas and oil, as well as for biomass boilers.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Lengths: 250mm, 330mm, 500mm, 1000mm
Twinwall DW25 Boiler Adapter.
Our high-quality twinwall boiler adapters are made from 316-grade stainless steel.
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They are used to connect twinwall pipe lengths to condensing boilers, as well as to singlewall or vitreous enamel pipes.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Twinwall DW25 Rain Cap.
Where there is no chimney pot, rain caps are the ideal solution in preventing rain from getting into the flue system at the top of the stack.
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Our high-quality twinwall DW25 rain caps are made from 316-grade stainless steel and have been tested to ensure their resilience in a range of weather conditions.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Twinwall DW25 Top Stub.
If no rain guard is needed, a top stub is used at the top of the chimney. Our rigorously tested twin-wall DW25 top stubs are made from 316-grade stainless steel.
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They can withstand temperatures of up to 450°C, with an insulation thickness of 25mm.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Twinwall DW25 Flue Pipe Bends.
Our high-quality twinwall DW25 flue pipe bends are made from 316-grade stainless steel (inner wall) and 304-grade stainless steel (outer wall).
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They prevent typical thermal bridge problems by providing the optimum draught via the continuity of the installation, as well as offering excellent insulation to maximise appliance efficiency. The DW25 twinwall system is suitable for appliances using wood, coal, gas and oil, as well as for biomass boilers.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Angles: 30 degrees, 45 degrees, 90 degrees
Twinwall DW25 Flue Pipe Tees.
Our high-quality twinwall DW25 flue pipe tees are made from 316-grade stainless steel (inner wall) and 304-grade stainless steel (outer wall).
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They prevent typical thermal bridge problems by providing the optimum draught via the continuity of the installation, as well as offering excellent insulation to maximise appliance efficiency. The DW25 twinwall system is suitable for appliances using wood, coal, gas and oil, as well as for biomass boilers
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Angles: 30 degrees, 87 degrees, 90 degrees
Twinwall DW25 Wall Support Brackets.
Our high quality twinwall DW25 system wall support brackets are made from 316-grade stainless steel.
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By affixing to the wall, our brackets provide internal support to the chimney and flue system. The wall clearance can be adjusted to suit the system installed.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Twinwall DW25 Top Stub.
If no rain guard is needed, a top stub is used at the top of the chimney. Our rigorously tested twin-wall DW25 top stubs are made from 316-grade stainless steel.
Read more
They can withstand temperatures of up to 450°C, with an insulation thickness of 25mm.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Technical information
|
Designations |
EN 1856-1 T200 P1 W V2 L50040 O30 EN 1856-1 T600 N1 W V2 L50040 G70 |
| Fuel type | Gas, oil, solid fuel, wood biomass |
| Continuous firing temp | 600 (N) 200 (P) |
| Insulation | Mineral wool |
Need more information?
Contact us to find out about our full range of small-diameter flue components and flue liner.
SW04 Single Wall Flues
Singlewall SW04 Flue Pipe Length.
Our high-quality singlewall SW04 flue pipes are made from 316-grade stainless steel.
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The SW04 singlewall system connects an appliance to a chimney liner or to a twinwall flue system. The system is suitable for applications using gas, oil and solid fuel at temperatures of up to 600°C.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Lengths: 250mm, 330mm, 500mm, 1000mm
Singlewall SW04 Boiler Adapter.
Our high-quality singlewall boiler adapters are made from 316-grade stainless steel.
Read more
They are used to connect single wall pipe lengths to condensing boilers, as well as to twinwall or vitreous enamel pipes.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Singlewall SW04 Rain Cap.
Where there is no chimney pot, rain caps are the ideal solution in preventing rain from getting into the flue system at the top of the stack.
Read more
Our high-quality singlewall SW04 rain caps are made from 316-grade stainless steel and have been tested to ensure their resilience in a range of weather conditions.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Singlewall SW04 Top Stub.
If no rain guard is needed, a top stub is used at the top of the chimney. Our rigorously tested singlewall SW04 top stubs are made from 316-grade stainless steel.
Read more
They can withstand temperatures of up to 450°C, with an insulation thickness of 25mm.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Singlewall SW04 Flue Pipe Bends.
Our high-quality singlewall SW04 flue pipe bends are made from 316-grade stainless steel.
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The SW04 singlewall system connects an appliance to a chimney liner or to a twin-wall flue system. The system is suitable for applications using gas, oil and solid fuel at temperatures of up to 600°C.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Angles: 30 degrees, 45 degrees, 90 degrees
Singlewall SW04 Flue Pipe Tees.
Our high-quality singlewall SW04 flue pipe tees are made from 316-grade stainless steel.
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The SW04 singlewall system connects an appliance to a chimney liner or to a twinwall flue system. The system is suitable for applications using gas, oil and solid fuel at temperatures of up to 600°C.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Angles: 30 degrees, 87 degrees, 90 degrees
Singlewall SW04 Wall Support Brackets.
Our high-quality singlewall SW04 system wall support brackets are made from 316-grade stainless steel.
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By affixing to the wall, our brackets provide internal support to the chimney and flue system. The wall clearance can be adjusted to suit the system installed.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Singlewall SW04 Flue Pipe Adjustable Length.
Our high-quality singlewall SW04 adjustable flue pipes are made from 316-grade stainless steel.
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Adjustable lengths provide extra flexibility when standard sizes are unsuitable. The SW04 singlewall system connects an appliance to a chimney liner or to a twinwall flue system. The system is suitable for applications using gas, oil and solid fuel at temperatures of up to 600°C.
Available sizes
Diameters: 80mm, 100mm, 130mm, 150mm, 180mm, 200mm
Technical information
| Designations |
EN 1856-2 T600 N1 W V2 L50040 G500 EN 1856-2 T600 N1 W V2 L50050 G500 EN |
| Fuel type | Gas, oil, solid fuel, wood biomass |
| Continuous firing temp | 600 (N) 200 (P) |
Need more information?
Contact us to find out about our full range of small-diameter flue components and flue liner.
Flex Liners Warranty
We are confident that our products (Expoflex 316 & Extraflex 904 – both known separately as our “Product and collectively as our Products”) will provide many years of reliable service providing that you comply in full with your responsibilities below.
Warranty Terms
For our warranty to apply, the warranty conditions set out in our Flexible liner domestic only warranty registration document must be followed:
Please download the warranty registration, complete all information and email back to flexlinerwarranty@a1flues.co.uk
When applied, installed, used and maintained correctly, we guarantee that our Products will be free from defects (corrosion) for whichever is greater:
-
A period equal to the guarantee period of the appliance to which the liner is first connected:
– OR –
-
20 years on Expoflex and 30 years Extraflex
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