Midtherm Midflex 904L is a twin wall flexible liner made from 904L grade stainless steel (a high performance austenitic stainless steel) with high levels of chrome, nickel, molybdenum and copper which provide it with the exceptional corrosive resistance.
The Midflex 904L is extremely resistant to pitting and crevice corrosion and has very good resistance to stress corrosion cracking.
- Class 1 Flexible Chimney Liner.
- Twin Wall Multifuel Flexible Liner in 904L 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: 904 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.
SUITABLE APPLICATIONS
- Ventilation and Extract
- Gas
- Oil
- Solid Fuel
- Pellet
- Biomass
TECHNICAL SPECIFICATION
- Product Code: 35b
- Description: Class 1 Flexible Chimney Liner
- Material: 904L Stainless Steel
INSTALLATION AND USAGE NOTES
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
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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