Blast Dampers

This product is used in ventilation systems to prevent entering the Blast wave through HVAC opening on external wall into the protected area.
Protected spaces could be such as control rooms, electrical substations and instrumentation rooms at oil & gas platforms and refineries or petrochemical plants.
Force of the Blast wave closes the Damper blades and seals the building, the blades should be opened manually when the condition turns to safe.