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The choice of duct quality is dictated by the working air pressure calculated for the ventilation system. We supply duct lengths to specification for all qualities and diameters. All ducts are supplied standard in yellow, apart from antistatic ducts, which are in light grey and white. All Ventiflex details have been developed to optimise air flow in accordance with the laws of aerodynamics and are produced in the strongest duct quality to withstand high stress.





FR = Fire Resistant | AS = Anti Static
All five of our duct qualities are:
Extras:
Our details come in all diameters and for all coupling systems. Ventiflex details can be customised to specification for more extreme ventilation duct installations to ensure optimum airflow, in example long duct installations.
Protan offers all kinds of details and can also a combine several details in one project.
Our range of couplings covers a variety of underground ventilation applications in mines and tunnels. The couplings contribute to the ventilation system’s great flexibility and adaptability. All our coupling systems are high quality and feature industrial quality design.




The industrial design of our suspension hooks and the range we offer have been developed on the basis of many years of experience to cover a variety of environments and situations in underground ventilation systems. Our hooks are dimensioned to withstand high tensile stress caused by powerful external winds, internal turbulence and vibrations in the duct system. Every Protan Ventiflex hook system has its advantages:

The Protan Ventiflex VF hook has a 380 mm wire attached for alignment purposes in drill-and-blast (D&B) tunnels and mines. This hook is also essential in pur Duo-duct system.

Protan Ventiflex snap hooks are used for fast installation and dismantling. For many customers this is their preferred hook in TBM-driven tunnels.

Protan Ventiflex LP hooks are easy to attach straight to the suspension wire when there is no need to adjust the height.
We recommend a few simple maintenance measures to ensure long-term, efficient operation of the ventilation system.
Simple maintenance ensures a good, safe working environment and contributes to reducing energy costs. The size of the ventilation ducts and fan is precisely calculated on the basis of set parameters. To maintain the desired air quality throughout the project, it is important that the system is not compromised
by damage or installation errors.

The Protan Ventiflex repair kit contains Ventlim, adhesive brushes, Ventanon washing preparation,pressure band, needle, thread and ventilation duct tectile.