Stainless steel flexible flue liners are designed for lining an existing flue or masonry chimney. Multifuel flexible is a twin skin chimney liner designed for gas, oil and multifuel, where the maximum flue gas temperature does not exceed 600Â°C. There are two grades available, 316L and a higher grade of 904L which is suitable for the extreme conditions found with coal based solid fuel installations.
316 or 904 grade stainless steel twin skin construction
For use inside masonry chimneys only
Residential and commercial installations
Class 1 multi fuel applications
Diameters from 80mm to 405mm
CE Approved to BSEN 1856-2
Designations 316 = T600 N1 W V2 50012 G (High Temp. Applicatons), T200 P1 W V2 L50012 O (Low Temp. Applications)
Designations 904 = T600 N1 W V2 L70012 G (High Temp. Applications), T200 P1 W V2 L70012 O (Low Temp. Applications)
Both inner and outer layers are made from corrosion-resistant 316L stainless steel. 904L stainless steel is also available as an option for the extreme conditions found with coal based solid fuel installations
Corrugated outer skin for high crush resistance
Smooth inner skin resists corrosive attack due to easy drain down of condensate, less opportunity for soot collection and smooth surface for ease of sweeping
Inner skin remains overlapping to protect the joint from corrosion penetration even at minimum bending radius
Inner skin remains smooth and protective even after the rigours of installation
Gas, Oil and 316 grade multi fuel flexible liners carry a 10 year conditional warranty, whilst 904 grade multi fuel flexible liners carry a 25 year conditional warranty. However, the flexible flue liner must be correctly sized, installed, and properly maintained, burning only approved fuels in accordance with the appliance manufacturers instructions.