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Flexible Ducting


Jensen Ventilation AB Flexible Ducting Systems

Jensen Ventilation AB produces and delivers ventilation tubes according to customer requirements for mines, tunnels and other underground work.


Flexible Ducting

Jensen Ventilation AB uses a welding system that is based on a superior welding method. The method was developed within the company and patented in 1981 in Sweden. The 40 mm wide weld seam becomes almost as strong and durable as the material itself.

Material Facts

Over the years the focus has been placed on being able to produce qualities that cater to different requirements for strength and construction. The result is reflected in today's qualities JP 501, JP 551, JP 651 and JP 752. All are dimensionally stable, fire retardant and possesses a low coefficient of friction. Anti-static option is also available.

With the help of bends, Y-and T-tubes and reductions, all made from extremely solid fabrics with welded seams, Jensen Ventilation offers a complete and reliable ventilation system.

Three Options for Connecting:

  • Coupling Clamp
  • Zip Connection 
  • Velcro Connection

Changes in air speed will result in an alteration of the dynamic pressure, to the disadvantage for efficient ventilation with loss of energy as a consequence. A straighter and tighter tube in the coupling area will lead to better results at the end of the ventilation canal and reduced costs for high kW performance of the fan and reduced operative expenses on account of energy-saving.


  • The galvanized steel hooks are packed in boxes and placed together with ducting
  • The hooks are to be hooked on a longitudinal steel wire on the tunnel ceiling
  • The suspension is constructed in such a way that is there would be extraordinary force on the ducting, the steel hooks will break and leave the reinforcements without damage.
  • Steel hooks are available as spare parts and can easily be reassembled on the ducting