Midtherm Midflex 316L is a twin wall flexible liner made from 316L grade stainless steel and produced to the highest standards. The Midflex 316L has good resistance to pitting and crevice corrosion.

Where a lower temperature/slumbering operation may be encountered our Midflex 904L product should be used as this grade of stainless steel provides better corrosion resistance to condensation.

904L is recommended for use with relatively high sulphur content fuel, such as processed coal products (smokeless fuels).

  • Class 1 Flexible Chimney Liner.
  • Twin Wall Multifuel Flexible Liner in 316 grade stainless steel.
  • Available in sizes from 125 to 200 mm
  • Stocked in sizes from 125 to 200 mm
  • Maximum operating temperature 600 deg C
  • Standard finish is: 316 stainless finish
  • Supplied Fully bubble wrapped and labelled
  • 1 year manufacturer’s warranty for all products installed and maintained in accordance with the installation and usage notes.
Ventilation and Extract
Gas
Oil
Solid Fuel
Pellet
Biomass


Product Code: 35a
Description: Class 1 Flexible Chimney Liner
Material: 316L Stainless Steel

All flue system installations, i.e. oil, gas, solid and multi fuel, should be carried out by a suitably qualified installer or Building Control Department permission must be granted.

For detailed installation guidelines please refer to:

  • The relevant Technical Information and Installation Instructions
  • Building Regulations
  • Planning Office
  • Appliance Manufacturers Operating and Maintenance Instructions
  • Relevant British Standards

Midtherm Flue Systems Limited offer an extended 20 year warranty for Midflex 316 for registered systems installed and maintained in accordance with the guidelines in our extended warranty scheme.

Product Certification

Certificate Name
Number
Issued By
BS EN 1856-2:2004 & BS EN 1443:2003
52022/1
BSRIA
Certificate of Conformity of the Factory Production Control
0086-CPR-597284
BSI

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