Twin Wall Flue & Single Wall Flue Commercial
Flue Direct is the UK's main supplier of stainless steel multi fuel insulated twin wall flue pipe, selling premium quality HETAS approved twin wall chimney flue in all diameters at the best prices. Our dedicated team of advisors can also provide you with FREE design advice for your twin wall flue system to make sure you have all the parts you need for your flue installation. If you need help with how to install a twin wall flue system you can refer to our FAQ's section or contact us for further advice. We always advise using a HETAS approved installer and to have you chimneys swept by a qualified chimney sweep every 12 months.
We offer unbeatable prices on our twin wall chimney flue which is available in stainless steel or black finish (interchangeable) with a Price Match Promise that if you find a like for like system we guarantee to beat the price. We supply Dinak DW and KC twin wall flue which comes with a 10 year Warranty and have been using this top quality product for years.
We are dedicated to providing a fast and reliable delivery service throughout the UK on all orders, with orders placed before 12.30pm being processed the same day. If you spend over £150 you will receive FREE DELIVERY.
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Twin Wall condensing boiler adapter (1C0) - 350mm dia
Product Code: 1c0350DW
RRP: £225.98Excl. Tax: £112.99 Incl. Tax: £135.59 -
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6" inch DW twin wall flue Increaser / reducer (026) to DW twin wall /6 inch to 200mm/8 inch
Product Code: 0601B6026DW
RRP: £160.04Excl. Tax: £73.85 Incl. Tax: £88.62 -
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8" inch Twin wall Connection to SW single wall flue (105)
Product Code: 105200SW2
RRP: £69.12Excl. Tax: £33.37 Incl. Tax: £40.04 -
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8" inch DW/SW Adapter (16Q)
Product Code: 03012016QDW
RRP: £92.02Excl. Tax: £46.33 Incl. Tax: £55.60 -
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3" inch Twin wall Connection from SW single wall flue (105)
Product Code: 10580SW
RRP: £42.64Excl. Tax: £24.66 Incl. Tax: £29.59 -
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7" inch Twin Wall Increaser/reducer (026) - to 200mm
Product Code: 0601EA026DW--cpy
RRP: £158.27Excl. Tax: £86.07 Incl. Tax: £103.28 -
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7" inch Boiler Adaptor Condensing / Stove adapter (1C0)
Product Code: 1C0180SW6
RRP: £87.36Excl. Tax: £36.10 Incl. Tax: £43.32 -
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Twin Wall special Flange boiler adapter (1B0) - 350mm dia (2 week lead lime)
Product Code: 1B0350
RRP: £399.99Excl. Tax: £245.99 Incl. Tax: £295.19 -
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14" inch Boiler Adaptor (100)
Product Code: 100350SW
RRP: £112.32Excl. Tax: £47.42 Incl. Tax: £56.90 -
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4" inch Twin wall condensing boiler adapter (1C0) /4 inch
Product Code: 1C0100DWJ
RRP: £79.56Excl. Tax: £37.47 Incl. Tax: £44.96 -
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5" inch Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q130SW6
RRP: £76.96Excl. Tax: £35.27 Incl. Tax: £42.32 -
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10" inch Excentric (flat bottom) reducer / increaser (026E) 200mm bottom - 250mm top - single wall flue
Product Code: 026E250SW6
RRP: £272.23Excl. Tax: £143.09 Incl. Tax: £171.71 -
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6" inch Twin wall Connection from single wall flue (105)
Product Code: 105150SW6
RRP: £65.52Excl. Tax: £27.55 Incl. Tax: £33.06 -
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10" inch Twin wall Connection from single wall flue (105)
Product Code: 105250SW
RRP: £86.32Excl. Tax: £39.68 Incl. Tax: £47.62 -
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4" inch DW Increaser/reducer (026) /4 inch to 130mm/5 inch
Product Code: 0601AG026DW
RRP: £110.40Excl. Tax: £66.70 Incl. Tax: £80.04 -
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3" inch Twin Wall adapter Increaser/reducer (026) - 80mm/3 inch to/4 inch
Product Code: 0601Y0026DWJ--cpy
RRP: £110.56Excl. Tax: £72.14 Incl. Tax: £86.57 -
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Twin Wall condensing boiler adapter (1C0) - 200mm dia
Product Code: 1c0200DW
RRP: £121.79Excl. Tax: £56.86 Incl. Tax: £68.23 -
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10" inch Twin wall Connection to SW single wall flue (105)
Product Code: 105250SW2
RRP: £89.64Excl. Tax: £44.50 Incl. Tax: £53.40 -
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4" inch Stove adaptor increaser to twin wall flue (A17) stove pipe to 130mmtwin wall flue
Product Code: A17100DW2
RRP: £72.44Excl. Tax: £42.32 Incl. Tax: £50.78 -
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8" inch Boiler Adaptor Condensing / Stove Adapter (1C0)
Product Code: 1C0200SW
RRP: £76.96Excl. Tax: £31.81 Incl. Tax: £38.17 -
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3" inch Single Wall Boiler Adaptor (100)
Product Code: 069108100FK
RRP: £24.47Excl. Tax: £13.62 Incl. Tax: £16.34 -
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4" inch Twin wall Boiler adaptor (100) - 100mm/4 inch
Product Code: 100100DW
RRP: £53.23Excl. Tax: £32.13 Incl. Tax: £38.56 -
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6" inch Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q150SW6
RRP: £80.08Excl. Tax: £40.28 Incl. Tax: £48.34 -
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5" inch Increaser (026) 100-130mm at top)
Product Code: 026130SW6
RRP: £90.48Excl. Tax: £37.47 Incl. Tax: £44.96 -
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5" inch Stove Adaptor Increaser from 5" 130mm to 6" twin wall flue (A17)
Product Code: A17130DW
RRP: £66.63Excl. Tax: £37.47 Incl. Tax: £44.96 -
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6" inch Excentric (flat bottom) reducer/increaser (026E) top bottom - Single wall flue
Product Code: 026E180SW6
RRP: £189.55Excl. Tax: £99.63 Incl. Tax: £119.56 -
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6" inch Stove adaptor Increaser from 130mm/ 5" outlet/vitreous to 6" twin wall flue (A17)
Product Code: 030113A17DW--cpy_1
RRP: £70.02Excl. Tax: £44.49 Incl. Tax: £53.39 -
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Twin Wall condensing boiler adapter (1C0) - 150mm dia
Product Code: 1c0150DWJ
RRP: £88.63Excl. Tax: £39.68 Incl. Tax: £47.62 -
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Twin wall Connection to SW single wall flue (105)
Product Code: 105300SW2
RRP: £122.04Excl. Tax: £56.86 Incl. Tax: £68.23 -
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10" inch Boiler Adaptor Condensing (1C0)
Product Code: 1C0250SW
RRP: £98.80Excl. Tax: £42.80 Incl. Tax: £51.36 -
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5" inch Flexible liner adaptor to twin wall flue (671) - 130mm/5 inch
Product Code: 671130DW.
RRP: £138.06Excl. Tax: £69.23 Incl. Tax: £83.08 -
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4" inch Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q100SW6
RRP: £80.08Excl. Tax: £42.25 Incl. Tax: £50.70 -
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6" inch Twin Wall flue boiler adapter (100)
Product Code: 030115100DW
RRP: £54.44Excl. Tax: £26.11 Incl. Tax: £31.33 -
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7" inch Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q180SW6
RRP: £83.20Excl. Tax: £39.69 Incl. Tax: £47.63 -
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6" inch Reducer/Increaser (026) 150-150mm at top 130mm at bottom)
Product Code: 026150SW6
RRP: £104.00Excl. Tax: £68.44 Incl. Tax: £82.13 -
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5" inch Boiler Adaptor (100)
Product Code: 100130SW62
RRP: £38.88Excl. Tax: £17.77 Incl. Tax: £21.32 -
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5" inch Twin wall Condensing Boiler adaptor (1c0) - 130mm/5 inch
Product Code: 1c0130DW
RRP: £83.83Excl. Tax: £37.78 Incl. Tax: £45.34 -
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5" inch Excentric (flat bottom) Reducer/increaser (026E) 130mm top bottom - Single wall flue
Product Code: 026E130SW6
RRP: £137.83Excl. Tax: £73.06 Incl. Tax: £87.67 -
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14" inch Twin wall Connection to SW single wall flue (105)
Product Code: 105350SW2
RRP: £174.96Excl. Tax: £81.58 Incl. Tax: £97.90 -
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12" inch Boiler Adaptor Condensing (1C0)
Product Code: 1C0300SW
RRP: £131.04Excl. Tax: £54.01 Incl. Tax: £64.81 -
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7" inch Stove adaptor increaser from 6 inch (150mm) vitreous enamel or spigot to (180mm) twin wall flue (A17)
Product Code: 030115A17DW2
RRP: £75.27Excl. Tax: £41.88 Incl. Tax: £50.26 -
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4" inch Reducer/Increaser (026) 100-100mm at top, 80mm at bottom)
Product Code: 026100SW6
RRP: £75.92Excl. Tax: £31.96 Incl. Tax: £38.35 -
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14" inch Twin Wall boiler adapter (100)
Product Code: 030135100DWJ
RRP: £145.99Excl. Tax: £89.99 Incl. Tax: £107.99 -
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6" inch Twin Wall DW/SW Adapter (16Q)
Product Code: 03011516QDW
RRP: £76.00Excl. Tax: £40.28 Incl. Tax: £48.34 -
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5" inch Twin wall flue to flexible liner adaptor (675)
Product Code: 130dw675
RRP: £174.72Excl. Tax: £74.19 Incl. Tax: £89.03 -
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5" inch Twin Wall Increaser/reducer (026) - 130mm/5 inch to 150mm/6 inch
Product Code: 0601CK026DW
RRP: £117.40Excl. Tax: £68.44 Incl. Tax: £82.13 -
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8" inch Twin Wall Increaser/reducer (026) to 250mm
Product Code: 0601E2026DW2
RRP: £185.99Excl. Tax: £93.65 Incl. Tax: £112.38 -
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14" inch Twin wall Connection from SW single wall flue (105)
Product Code: 105350SW
RRP: £168.48Excl. Tax: £72.75 Incl. Tax: £87.30 -
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6" inch Boiler Adaptor (100)
Product Code: 100150SW6
RRP: £43.68Excl. Tax: £17.98 Incl. Tax: £21.58 -
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6" inch flexible liner adaptor to twin wall flue (671)
Product Code: 2-150-101_cp1
RRP: £142.74Excl. Tax: £45.68 Incl. Tax: £54.82 -
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8" inch Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q200SW
RRP: £96.72Excl. Tax: £46.29 Incl. Tax: £55.55 -
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3" inch Twin wall DW to Single wall SW Adapter (16Q)
Product Code: 03010816QDW
RRP: £66.13Excl. Tax: £42.07 Incl. Tax: £50.48 -
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Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q80SW6
RRP: £73.84Excl. Tax: £35.05 Incl. Tax: £42.06 -
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7" inch Twin wall Connection from single wall flue (105)
Product Code: 105180SW6
RRP: £78.00Excl. Tax: £31.96 Incl. Tax: £38.35 -
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7" inch Reducer/Increaser (026) 150mm at the bottom to 180mm at top)
Product Code: 026180SW6
RRP: £124.80Excl. Tax: £62.59 Incl. Tax: £75.11 -
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12" inch Twin wall Increaser/reducer (026) - 300mm to 350mm
Product Code: 0601G5026DW
RRP: £322.35Excl. Tax: £156.80 Incl. Tax: £188.16 -
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4" inch Twin wall Connection from single wall SW flue (105)
Product Code: 105100SW6
RRP: £49.92Excl. Tax: £27.11 Incl. Tax: £32.53 -
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14" inch Boiler Adaptor Condensing (1C0)
Product Code: 1C0350SW
RRP: £168.48Excl. Tax: £71.15 Incl. Tax: £85.38 -
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5" inch Stove Adaptor Increaser from 4" to 5" 130mm twin wall flue (A17)
Product Code: A17100DW
RRP: £66.63Excl. Tax: £26.49 Incl. Tax: £31.79 -
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4" inch Boiler Adaptor (100)
Product Code: 100130SW6
RRP: £37.44Excl. Tax: £15.84 Incl. Tax: £19.01 -
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14" inch DW/SW Adapter (16Q)
Product Code: 03013516QDW
RRP: £137.37Excl. Tax: £69.17 Incl. Tax: £83.00 -
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12" inch Excentric (flat bottom) reducer / increaser (026E) 250mm bottom - 300mm top - single wall flue
Product Code: 026E300SW6
RRP: £337.71Excl. Tax: £174.89 Incl. Tax: £209.87 -
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14" inch Twin wall reducer (026) - 350mm to 300mm
Product Code: 0601G5026DW2
RRP: £334.75Excl. Tax: £156.87 Incl. Tax: £188.24 -
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3" inch Twin wall Connection from single wall SW flue (105)
Product Code: 10580SW6
RRP: £42.64Excl. Tax: £29.59 Incl. Tax: £35.51 -
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Twin Wall condensing boiler adapter (1C0) - 250mm dia
Product Code: 1c0250DWJ
RRP: £144.83Excl. Tax: £66.13 Incl. Tax: £79.36 -
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10" inch Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q250SW
RRP: £113.36Excl. Tax: £51.59 Incl. Tax: £61.91 -
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12" inch Twin Wall boiler adapter (100) -300mm dia
Product Code: 030130100DW
RRP: £112.07Excl. Tax: £51.80 Incl. Tax: £62.16 -
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7" to 8" inch Increaser (026) 180-200mm at the top)
Product Code: 026200SW
RRP: £145.08Excl. Tax: £74.99 Incl. Tax: £89.99 -
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5" inch Twin Wall DW/SW Adapter (16Q)
Product Code: 03011316QDW
RRP: £73.47Excl. Tax: £35.04 Incl. Tax: £42.05 -
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Boiler Adaptor Condensing / Stove Adapter (1C0)
Product Code: 1C080SW6
RRP: £42.64Excl. Tax: £20.43 Incl. Tax: £24.52 -
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7" inch Boiler Adaptor (100)
Product Code: 100180SW6
RRP: £52.00Excl. Tax: £21.49 Incl. Tax: £25.79 -
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5" inch Twin wall Connection to single wall SW Flue (105)
Product Code: 105130SW
RRP: £57.20Excl. Tax: £24.85 Incl. Tax: £29.82 -
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8" inch Excentric (flat bottom) reducer / increaser (026E) bottom top - single wall flue
Product Code: 026E200SW6
RRP: £210.20Excl. Tax: £105.99 Incl. Tax: £127.19 -
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7" inch Twin Wall boiler adapter (100)
Product Code: 030118100DWJ
RRP: £57.92Excl. Tax: £29.16 Incl. Tax: £34.99 -
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6" inch DW twin wall Increaser/reducer (026) to DW twin wall/6 inch to 180mm/7 inch
Product Code: 0601DI026DW
RRP: £132.63Excl. Tax: £66.78 Incl. Tax: £80.14 -
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10" inch Twin Wall Increaser/reducer (026) - 250mm to 300mm
Product Code: 0601F4026DW
RRP: £219.49Excl. Tax: £110.52 Incl. Tax: £132.62 -
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4" inch Twin wall DW Adapter to single wall SW (16Q)
Product Code: 03011016QDW
RRP: £70.55Excl. Tax: £50.70 Incl. Tax: £60.84 -
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Twin Wall condensing boiler adapter (1C0) - 180mm dia
Product Code: 1C0180DWJ
RRP: £98.16Excl. Tax: £59.99 Incl. Tax: £71.99 -
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12" inch Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q300SW
RRP: £136.24Excl. Tax: £61.72 Incl. Tax: £74.06 -
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8"-10" inch Increaser (026) 200-250mm
Product Code: 026250SW
RRP: £137.28Excl. Tax: £60.69 Incl. Tax: £72.83 -
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4" inch Stove adaptor to twin wall flue (A16) / 4 inch dia
Product Code: A16100DW
RRP: £69.75Excl. Tax: £42.32 Incl. Tax: £50.78 -
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10" inch Twin Wall boiler adapter (100)
Product Code: 030125100DWJ
RRP: £85.36Excl. Tax: £42.98 Incl. Tax: £51.58 -
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6" inch Twin wall Connection to SW single wall flue (105)
Product Code: 105150SW
RRP: £65.52Excl. Tax: £27.55 Incl. Tax: £33.06 -
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5" inch Boiler Adaptor Condensing / Stove adapter (1C0)
Product Code: 1C0130SW6
RRP: £63.44Excl. Tax: £26.45 Incl. Tax: £31.74 -
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5" inch Stove Adaptor to twin wall flue (A16) - 130mm/5 inch
Product Code: A16130DW
RRP: £66.63Excl. Tax: £21.19 Incl. Tax: £25.43 -
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6" inch Excentric (flat bottom) reducer / increaser (026E) 130mm bottom top - single wall flue
Product Code: 026E150SW6
RRP: £158.54Excl. Tax: £84.03 Incl. Tax: £100.84 -
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7" inch DW/SW Adapter (16Q)
Product Code: 03011816QDW
RRP: £78.81Excl. Tax: £39.69 Incl. Tax: £47.63 -
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12" inch Twin Wall condensing boiler adapter (1C0) -300mm dia
Product Code: 1C0300DWJ
RRP: £180.79Excl. Tax: £80.46 Incl. Tax: £96.55 -
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6" inch Stove adaptor to twin wall flue (A16)
Product Code: 030115A16DW--cpy
RRP: £74.34Excl. Tax: £30.73 Incl. Tax: £36.88 -
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14" inch Twin wall/Single wall Connection (16Q) (Twin wall at the bottom single wall at the top)
Product Code: 16Q350SW
RRP: £144.56Excl. Tax: £84.40 Incl. Tax: £101.28 -
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12" inch Reducer/Increaser (026) 300-250mm
Product Code: TEMP300
RRP: £177.12Excl. Tax: £79.12 Incl. Tax: £94.94 -
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10" inch Boiler Adaptor (100)
Product Code: 100250SW
RRP: £57.20Excl. Tax: £28.54 Incl. Tax: £34.25 -
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7" inch Stove adaptor to twin wall flue pipe (A16)
Product Code: 030118A16DW2
RRP: £82.51Excl. Tax: £38.57 Incl. Tax: £46.28 -
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4" inch Twin wall Connection from single wall SW flue (105)
Product Code: 105100SW
RRP: £49.92Excl. Tax: £22.59 Incl. Tax: £27.11 -
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10" inch DW/SW Adapter (16Q)
Product Code: 03012516QDW
RRP: £108.15Excl. Tax: £51.59 Incl. Tax: £61.91 -
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5" inch Twin wall Connection from SW single wall flue (105)
Product Code: 105130SW6
RRP: £57.20Excl. Tax: £24.85 Incl. Tax: £29.82 -
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8" inch Twin wall Connection from single wall SW flue (105)
Product Code: 105200SW
RRP: £66.56Excl. Tax: £29.75 Incl. Tax: £35.70 -
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12" inch Twin wall Connection from single wall flue (105)
Product Code: 105300SW
RRP: £117.52Excl. Tax: £50.70 Incl. Tax: £60.84
Twin Wall Flue & Single Wall Flue Commercial
About our Insulated twin wall Chimney Flue Pipe
- Twin wall flue can be used where there is no existing chimney. It can be uses internally and externally and pass through, walls, floors and the roof depending upon the flue route required.
- Our Dinak flue system (EN 1856-1 T450 N1 W VmL50040 G60) and KC Convesa flue pipe range (EN1856-1 T600 N1 W VM L50040 G60) are both HETAS approved and fast and easy to install and due to their quality manufacture, plus they come with a 10yr warranty.
- Suitable for all types of multi fuel applications using wood, solid (coal), oil, gas, diesel, biofuel and pellet appliances.
- Both twin wall flue systems are suitable for condensing and dry applications (you must order seals/joints with each component of flue pipe for condensing applications).
- Our stainless steel, insulated flue systems are available in 3" 80mm, 4" 100mm, 5" 130mm, 6" 150mm, 7" 180mm, 8" 200mm, 10" 250mm, 12" 300mm and 14" 350mm. 5" 130mm and 6" 150mm 7" 180mm and 8" 200 mm are also available in black. Black/stainless twin wall flue are fully interchangeable.
- Widest range of diameters available on the market along with all the variations of components required for both domestic and commercial installations.
- Perfect choice for biomass boiler flue installations.
How to Install a Twin Wall Flue System
Our Chimney flue truly is a 'Fitters Choice' as it comes in all the possible diameters required, with all the possible components for commercial and domestic applications and with the ability to increase flue size going up as necessary. It is a simple push fit joint system that is both fast and easy to install and comes fully welded to ensure a superior finished twin wall system (60mm to combustibles). Please ensure that the finished system is as vertically straight as possible. All domestic flue installations should be carried out by a HETAS approved installer. For condensing applications please order and fit and seals with each component.
The chimney should remain as straight as possible and be high enough to ensure sufficient draught to clear the products of combustion. The height necessary for this will depend upon the type of the appliance, the height of the building, and the number of offsets within the system. However, a minimum flue height of 4.5m should be achieved as recommended in the Building Regulations. All chimneys must comply with the Clean Air Act. The size of the chimney system should be as recommended by the appliance manufacturer and in most cases should not be smaller than the appliance outlet.
Single Wall Stainless Steel Condensing Flue pipe Technical information
This is a modular single skin chimney system manufactured to BS EN1856-1, constructed from AISI 316L fully welded liner and is CE approved. It is suitable for gas, oil and solid fuels and for dry, condensing (wet) or non-condensing applications. We would recommend using our twin wall flue systems for Biomass flue installations.
Working temperature:
250ºC EN1856-1: Chimneys
600ºC EN 1856-2: Liners
200 Pa (No seal required)
Tested for soot fire resistance for chimney lining.