Skip to main content

Convincing benefits

Find out more about the special advantages that make the VENTAFLEX® ventilation system so powerful, efficient and economical.

Insulation/Heat protection

 

Comparison of structure and insulation

 

Comparison of thermal conductivity

 

Exemplary calculation for heat loss:

Diameter: DN500/600
Insulation: 50 mm
Area: 18.84 m²
Duct length: 10 m
Temperature difference: 30 K

Heat transfer coefficient:
VENTAFLEX® PUR rigid foam 0,022 W/mK
Spiral duct with mineral wool insulation 0,038 W/mK
Spiral duct with India-rubber insulation 0,040 W/mK

Heat loss =
Heat transfer coefficient x area x temperature difference / material thickness

VENTAFLEX® with PUR rigid foam insulation 249 W
Spiral duct with mineral wool insulation 430 W
Spiral duct with India-rubber insulation 453 W

 

Top-Downloads

VENTAFLEX® catalog 2022

VENTAFLEX® catalog 2022

All air duct products, technical details, supplies and installation instructions can be found in our general catalog.

Download pdf (12 MB)
Installation instruction VENTAFLEX® air duct round

Installation instruction VENTAFLEX® air duct round

  • Installation of VENTAFLEX® air ducts with VENTASNAP and VENTAFIX
  • Glueing of VENTAFLEX® air ducts
  • Installation of a compensator for the expansion compensation
Download pdf (827 KB)
Installation instruction VENTAFLEX® air duct for underground installation

Installation instruction VENTAFLEX® air duct for underground installation

  •  Recommended measures for installation

  • Application VentaSnap + adhesion

  • Length adjustment of air ducts

  • Creation of a wall duct

  • Installation wall collar

Download pdf (2 MB)

Top-News

The change in energy policies demands a different technology

Read more

Every construction plan has its own challenges, because each project demands an individual solution.

Read more

The planning of complex systems is easier to manage, when all necessary components needed for construction are detectable at a glance. That is the only way to put the actual perfect solution together.

Read more

The construction industry depends on a variety of external conditions – at the moment there are delays at many large-scale projects, because not only skilled workers, but also material is not...

Read more