B Vent

B Vent is a twin wall gas heating system manufactured in the UK by Schiedel. B Vent is designed for cost-effective venting of residential and small commercial atmospheric gas appliances with input up to 60kw. It is suitable for both internal and external use, either as a complete system or in combination with masonry, i.e. brick chimneys.
Note that BS 5440-1 requires the use of a stainless steel insulated flue on external runs exceeding 3 metres.


  • Available in internal diameters 100, 125 and 150mm.
  • Twist lock bayonet jointing system.
  • No locking bands required.
  • Aluminium inner liner and aluzink outer case which can be painted if required.
  • 12.5mm air gap between case and liner keeps the case temperature low.
  • When a joint is made, the liner covers the jointing collar, shielding it and permitting easy drain-down of any moisture in the flue.


Internal Diam. (mm) 100 125 150
External Diam. (mm) 127 152 178

Please be aware this product is being withdrawn in 2022.

  Filename Format  
B Vent Brochure B Vent Brochure .PDF