HDB Blast Dampers
HDB blast dampers are used in ventilation systems to prevent the blast wave through external walls into the building. They are designed with high ventilation capacity. The dampers can protect people and equipment from explosions or momentary pressure change (e.g. tornadoes, etc.). When an explosion occurs, the valve will close instantly under the action of the shock wave; when the shock wave disappears, the valve will be automatically restored. They are mainly used in refineries, oil & gas, nuclear power plants and some other facilities which are at risk of explosions. They are installed on the air openings (air inlet and air outlet) of the facilities.
Main Specifications
MIN Size: 200 mm x 200 mm (W x H)
MAX Size: 2000 mm x 2400 mm (W x H),
Shock tube tested (Maximum pressure is 6 bar, 12.9ms; 1.1 bar, 57ms (peak reflected pressure), VTT
ATEX certified (Gas) IIC, Zone 1 & 2, IIC, T6...T2 (Dust), Zone 21 & 22, IIIB, T70ºC~T285ºC, TUV
The normal operating temperature is between -40 ºC to +300 ºC, 30 mins, SGS
Aerodynamic testing according to AMCA-500
Excellent corrosion resistance, passed the 1440h salt spray corrosion test follow the standard DIN EN ISO 9227: 2006
Equipped with grid preserving from the debris impact
Self-actuating closing and opening
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