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
