Dampers & Louvers

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Ellis & Watts offers a complete line of custom rectangular or round dampers for efficient, low-leak operation in demanding environments. Damper designs down to Leakage Class I are available.

Damper types - CLICK TO SEE FULL LIST

  • Backdraft Dampers
  • Balancing Dampers
  • Bubbletight Isolation Dampers
  • Fire & Smoke Dampers
  • Modulating Control Dampers
  • Shutoff Dampers
  • Tornado Dampers

Materials of construction available - CLICK TO SEE FULL LIST

  • Galvanized steel
  • Stainless steel
  • Aluminum

Power options - CLICK TO SEE FULL LIST

  • Manual
  • Electric
  • Pneumatic
  • Hydraulic

Testing and Qualification can include - CLICK TO SEE FULL LIST

  • ASME NQA-1 compliance
  • 10CFR50 Appendix B compliance
  • Performance tested to AMCA Standard 500
  • Cycle tested per ASME N509
  • UL 555 for Smoke and Fire Dampers
  • ASME AG-1 Section DA
  • Seismic qualification per IEEE 344
  • Environmental qualification per IEEE 323
  • Damper Actuators to IEEE 382

Past projects in which Ellis & Watts successfully met stringent air damper compliance requirements include - CLICK TO SEE FULL LIST

  • Los Alamos National Labs
  • National Bio and Agro-Defense Facility