TUNNEL AND BLAST DAMPERS

Tested to the limit...

...no Pressure too Great!

Blast Dampers

APPLICATION


Flamgard Calidair’s blast dampers are designed to prevent blast forces entering ventilation duct systems or a wide range of installations where a blast could result in loss of life and/or equipment or material. They are rigidly constructed and fully welded for this purpose and comprises of two sections: a dynamic debris catcher directs the blast onto the blade pack. This consequently closes under blast pressure, isolating the blast force and preventing blast damage or loss. The blade open position is adjusted and held by a ‘blast break’ mechanism, ensuring safety and reliability of the system.


STRUCTURE AND DIMENSIONS


Individual units are supplied in sizes up to 1500mm square, with multiple units assembled together in a matrix to cover larger areas as required. Standard units are constructed in 304 or 316 stainless steel.


CERTIFICATION


The Flamgard Calidair blast damper has been independently blast performance tested and is certified by SIRA to 04ATEX9322 for ATEX Group II Category 2 G/D use by SIRA.


Tunnel Dampers

APPLICATION

 

Flamgard Calidair’s tunnel dampers are rigidly designed and are used to regulate the airflow in transit tunnels. They ensure that the air that is circulating through the tunnel is safe for passenger transit, without excessive build up of exhaust gases. In normal conditions, tunnel dampers control the volumetric air flow in a transit tunnel.

In emergency fire conditions, it is essential that the dampers are there not only for ventilation, but to regulate the fire and the associated smoke and hot gases. Fires in tunnels generate severe smoke which, if not reliably ventilated, could cause those in the tunnel to suffer the life-threatening effects of smoke inhalation. Tunnel dampers can be used in emergency conditions to operate to extract these toxic fumes and smoke away from the critical area as well as providing a fire barrier when closed.

 

STRUCTURE AND DIMENSIONS

 

Individual units are supplied in sizes up to 1275mm square, with multiple units assembled together in a matrix to cover larger areas as required. Units are constructed as required in 304 or 316 stainless steel, galvanised mild steel or other materials to suit the client’s specific needs.

 

CERTIFICATION

 

Dampers in this range have been tested for operation in temperatures of 400 deg C for 2 hours.

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