Supra Plus

The SUPRA Plus chimney system range is specifically designed to
meet the demands of the latest high efficiency condensing heating
appliances. SUPRA Plus is supplied complete with factory fitted and
bonded elastomer seals, offering peace of mind and reduced installation
time for the installer.
SUPRA Plus is a single-wall pre-fabricated stainless steel flue system, primarily
designed for gas and kerosene (28Sec) oil fired appliances, which produce
condensates and positive pressure conditions as a function of their operation,
such as high efficiency condensing boilers.
SUPRA Plus is manufactured in 9 diameters ranging from 80mm to 355mm
and consists of a range of lengths and fittings which simply push-fit
together, and which are secured with a Locking Band. The entire system is
manufactured from corrosion resistant grade 316L (1.4404:X2CrNiMo 17-12-
2) stainless steel and is manufactured using a fully welded construction and
precision formed close tolerance joints.
The SUPRA Plus product is available with a wide range of support components
that cater for both lateral and vertical structural loading of the product. SFL
does not recommend any other system of support being used with the SUPRA
Plus product, unless approved by SFL prior to installation.


The standard SUPRA Plus product is primarily designed for internal
applications and for use on high efficiency gas / kerosene fired condensing
appliances and for applications where the chimney could be under positive
pressure conditions not exceeding 200Pa at a maximum flue gas temperature
of 200°C.
SUPRA Plus can also be used as a rigid chimney liner within a masonry
chimney. Where used in a lining capacity, SUPRA Plus can be used with
the seals removed and is designated as sootfire resistant (G) whilst resistant
to water vapour diffusion and condensate penetration (W). The pressure
resistance, however, becomes N1 (40Pa) for atmospheric draught appliances.
Applications include condensing biomass boilers and other situations where
condensation is expected from a natural draught appliance.
When flueing condensing appliances and where the chimney is external to
the building, there is a risk that the condensates could freeze. In such cases,
SFL would recommend that a twin wall insulated product such as NOVA® is
used to prevent this. Regulations now require all domestic external flue runs
over 3m are to be made from twin wall insulated product manufactured with
a stainless steel liner.



  • Supra Plus

    Supra Plus

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