Protection Device for Ventilation Ducts
Patent No. EU 2 030 651 B1 / Patent No. US 8,251,786 B2

When closed the protection device fulfils all the requirements for a highly sensitive room regarding: Fire resistance value, flue-gas tightness, water retention, level of protection against burglary, pressure resistance, etc.!


The balanced, heavyweight protection device only requires a very low input of power (12 or 18 nm) in order to open and close, this results in a very high functional capacity – even in the event of an MCA (maximum credible accident).


In the event of fire, the protection device for ventilation ducts closes automatically via a spring return actuator, without electricity!


Download the product description


Download the application examples for ventilation ducts