HDB Blast Damper

HDB is used in ventilation systems to prevent the blast wave through external walls into the building. Force of the blast wave closes blades and seals the building, such as control rooms, instrumentation rooms, electrical sub-stations, personnel spaces and emergency shelters. After attenuation of blast wave, the force of damper spring opens blades automatically and maintain ventilation.

Product Details

  • Pressure Load Test, ≥6 bar
  • Salt Mist Test1440h , (60 days)
  • Special Fire Endurance,Test300℃ for 30mins
  • ATEX,(Gas) IIC, Zone 1 & 2, IIC, T6…T2; (Dust), Zone 21 & 22, IIB, T70℃~T285℃