Twin Wall Flue & Single Wall Flue Commercial
Installing a commercial flue system? We stock 8 inch, 10 inch and 12 inch twin wall flue. In metric terms this is 200mm, 250mm and 300mm. We also have some stock of 350mm, 14 inch twin wall flue and it is available to preorder.
Flue Direct is the UK's main supplier of stainless steel multi fuel insulated twin wall flue pipe, selling a premium quality HETAS approved twin wall chimney flue system 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 also supply commercial single wall flue in all diameters including 5 inch, 6 inch, 7 inch, 8 inch, 10 inch and 12 inch.
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 - it has been designed to consist of all the necessary flue components for domestic and commercial applications such as stoves / wood burners, commercial boilers, biomass boilers, pizza ovens etc.
We are dedicated to providing a fast and reliable delivery service throughout the UK on all orders, with orders placed before 1pm 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) - 150mm dia
Product Code: 1c0150DWJ
RRP: £98.63Excl. Tax: £54.99 Incl. Tax: £65.99 -
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4" inch Stove adaptor increaser to twin wall flue (A17) stove pipe to 130mmtwin wall flue
Product Code: 030110A17DW.
RRP: £72.44Excl. Tax: £63.99 Incl. Tax: £76.79 -
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8" inch Twin wall Connection from single wall SW flue (105)
Product Code: 105200SW
RRP: £66.56Excl. Tax: £49.99 Incl. Tax: £59.99 -
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6" inch Twin wall Connection from single wall flue (105)
Product Code: 105150SW6
RRP: £65.52Excl. Tax: £43.99 Incl. Tax: £52.79 -
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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: £105.99 Incl. Tax: £127.19 -
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5" inch Twin wall Condensing Boiler adaptor (1c0) - 130mm/5 inch
Product Code: 1c0130DW
RRP: £93.83Excl. Tax: £49.99 Incl. Tax: £59.99 -
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3" inch Single Wall Boiler Adaptor (100)
Product Code: 039F08100SWJ
RRP: £25.99Excl. Tax: £19.99 Incl. Tax: £23.99 -
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12" inch Twin wall Stove adapter (A16)
Product Code: 030130A16DW
RRP: £334.75Excl. Tax: £95.99 Incl. Tax: £115.19 -
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7" inch Twin Wall Increaser (026) - to 200mm
Product Code: 0601EA026DW--cpy
RRP: £178.27Excl. Tax: £116.99 Incl. Tax: £140.39 -
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5" inch Twin wall Connection from SW single wall flue (105)
Product Code: 105130SW6
RRP: £97.20Excl. Tax: £49.99 Incl. Tax: £59.99 -
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3" inch Twin Wall adapter Increaser (026) - 80mm/3 inch to/4 inch
Product Code: 0601Y0026DWJ--cpy
Excl. Tax: £110.99 Incl. Tax: £133.19 -
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4" inch Twin wall Connection from single wall SW flue (105)
Product Code: 105100SW
RRP: £49.92Excl. Tax: £32.99 Incl. Tax: £39.59 -
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5" inch Flexible liner adaptor to twin wall flue (671) - 130mm/5 inch
Product Code: 671130DW.
RRP: £138.06Excl. Tax: £71.99 Incl. Tax: £86.39 -
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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: £95.99 Incl. Tax: £115.19 -
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10" inch Twin Wall boiler adapter (100)
Product Code: 030125100DW
RRP: £125.36Excl. Tax: £69.99 Incl. Tax: £83.99 -
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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: £49.99 Incl. Tax: £59.99 -
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4" inch Twin wall condensing boiler adapter (1C0) /4 inch
Product Code: 1C0100DWJ
RRP: £79.56Excl. Tax: £47.99 Incl. Tax: £57.59 -
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6" inch flexible liner adaptor to twin wall flue (671)
Product Code: 2-150-101_cp1
RRP: £142.74Excl. Tax: £76.99 Incl. Tax: £92.39
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.