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TWIN-WALL FLUE SYSTEMS

Twinwall is an insulated Stainless Steel chimney system designed for the conveyance of all associated waste products of combustion from solid and multi-fuel appliances that operate under natural draught and non-condensing conditions.

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Construction

Twinwall sectional lengths/fittings are double-walled with fully welded vertical seam joints. Twinwall also utilises options of four insulated/non-insulated annular variation options which are integrated into the external case to help provide a minimum required outer case temperature. The jointing of inner liner and external case is that one side shall remain free to expand and retract according to the operating conditions and flue gas temperature.

Diameter RANGE

This double-lined system is available as TF 25 (with a 25mm insulating gap) or TF 50 (with 50mm insulation). There are also 75mm and 100mm annuli available on request.

INT DN Std . 100, 125, 150, 200, 250, 300,350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000,
(On Demand ) 175, 225, 275, 325, 375, 425, 475, 525, 575, 625, 675, 725, 775, 825, 875, 925, 975,

Quality Assurance;

The complete range of components are manufactured, tested, and where required, installed within scope of stringent quality controlled conditions in accordance with EN ISO 9001:2015 and BS EN 1856-1:2015. When requested, A1 Flue Systems shall submit copies of type test reports relating to product performance in addition to the “Certificate of Registration” administered by the British Standards Institute.

Fire Rating;

The Twinwall system has been successfully assessed by the Loss Prevention Council for Fire Resistance. A fire rating of 4 hours can be achieved in accordance with stability and integrity criteria of BS 476: part 20. If required, A1 Flue Systems shall submit all test reports in support.

APPLICATION EXAMPLES INCLUDE

Steam Generator Exhausts
Fan Assisted Flue System
Pressure Jet Burner
Kitchen Extract
Multi-Fuel Stoves
Smoke Extract
Oil and Gas Fired Boilers

Performance Designations;

BS EN1856-1 T450-N1-D-Vm-L20060-G (50)
BS EN1856-1 T450-N1-D-V2-L50060-G (50)
BS EN1856-1 T450-N1-D-Vm-L20070-G (50)
BS EN1856-1 T450-N1-D-V2-L50070-G (50)
BS EN1856-1 T160-P1-D-Vm-L20060-G (50)
BS EN1856-1 T160-P1-D-V2-L50060-G (50)
BS EN1856-1 T160-P1-D-Vm-L20070-G (50)
BS EN1856-1 T160-P1-D-V2-L50070-G (50)

Application

The Deltavent system has been successfully assessed by the Loss Prevention Council for Fire Resistance A fire rating of 4 hours can be achieved in accordance with stability and integrity criteria of BS 476: part 20. If required, A1 Flue Systems shall submit all test reports in support.

Atmospheric boilers

Atmospheric boilers take in air for combustion directly from the place in which they are located (unlike more modern boiler designs which take air in from the outside of the building through a tube).

Ovens & Bakery

Commercial bakery ovens are available in various types, each suited to specific production needs:

Biomass Heating System

Biomass heating systems generate heat from biomass. The systems may use direct combustion, gasification, combined heat and power (CHP), anaerobic digestion or aerobic digestion to produce heat.

Combined Heat & Power

Combined heat and power (CHP), also known as cogeneration, is a highly efficient power plant that generates heat and power simultaneously.

Commercial Ventilation

A1 Flue Systems is a UK specialist in commercial ventilation systems for buildings of all sizes, from small office blocks to schools, hospitals and large skyscrapers.

Condensing Boilers

Condensing boilers capture the exhaust condensation of the burning gas that would otherwise be wasted through the flue.

District Heating Systems

It used geothermal energy to provide heat for about 30 houses and started operation in the 14th century

Fan Dilution Systems

Fan dilution systems were originally developed in order to discharge the flue products from gas-fired appliances at a CO2 level of 1% or less

Chimneys Liners

Most commercial chimneys were constructed without a liner system, although some were originally built better than others given time they all tend to breakdown over the years.

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