Blast Dampers

The blast dampers manufactured by MAT are designed to protect equipment and personnel against blasts and instantaneous pressure changes from industrial vapor cloud explosions. Typical applications are the protection of the air intake/exhaust openings and building vent openings, and for protection and exhaust in fire suppression systems (when coupled with our BD-200-HD fire resistant pressure relief damper). Typical building spaces are control & instrumentation rooms, and sub-stations. MAT blast dampers can be surface mounted to exterior walls and roof structures or duct mounted.

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BL-201 Series Rectangular Blast Damper

  • Blast protection up to 3 bar and multiple blast load protection up to 1 bar.
  • ATEX certified for explosive atmospheres
  • AMCA certified pressure drop performance
  • Blade lock feature to hold damper closed and protect against subsequent negative pressure waves, and flame fronts
  • Available in carbon steel with a zinc rich primer coating, galvanized steel, or stainless steel
  • Can be paired with BD-200-HD pressure relief damper to relieve building pressure, or to provide pressure relief during fire suppression system gas release

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PATENT PENDING

BL-301 Series Rectangular Blast Damper

  • Shorter production lead times
  • Lower fabrication costs
  • Outstanding pressure drop performance
  • Single blast load and multiple blast load protection up to 1 bar
  • Blade locking feature that holds damper closed and protects against subsequent negative pressure waves, and flame fronts
  • Fabrication options including, carbon steel with a zinc-rich primer coating, galvanized steel, or stainless steel
  • Designed to be paired with BD-200-HD pressure relief damper to relieve building pressure, or to provide pressure relief during fire suppression system gas release

BL-250 Series Round Blast Damper

  • Blast protection up to 3 bar
  • Blade lock feature to hold damper closed and protect against subsequent negative pressure waves, and flame fronts
  • Available in carbon steel with a zinc rich primer coating, galvanized steel, or stainless steel

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