TAMCO Products
Series 7000 CW
Medium-Duty Counterweighted Backdraft Damper
- Counterweights are fully adjustable and can be set to relieve air pressure differentials less than .01" w.g.
- Counterweights are threaded and allow adjustments to be made with only one tool, and brackets are slotted to allow precision slide adjustment of the weights.
- TAMCO's aluminum construction provides a long, rust-free operational life.
- Aluminum pivot points are over-sized for additional strength and durability.
- Self-lubricating Celcon bearings ensure a maintenance-free and long-cycle life.
- Silicone seals are provided as standard to ensure sealing longevity and remain flexible down to -40° F/C.
- TAMCO's counterweighted backdraft damper blades are securely linked via a large diameter aluminum linkage rod.
- TAMCO’s linkage and bearing systems combine to provide durable, maintenance-free performance.
- TAMCO's counterweighted backdraft dampers are available in Front Flange, In Duct, or Rear Flange mounting types.
- Series 7000 Counterweighted Backdraft Dampers allow mounting for horizontal airflow, and both airflow up and airflow down operation.
Series 7000 CW Medium-Duty, Maintenance-Free Counterweighted Backdraft Damper:
- Ideal for installations requiring a maintenance-free backdraft damper with field-adjustable pressure relief.
- Used to accelerate opening of blades and designed to allow opening at lower pressures and airflow velocities.
MR - Moisture Resistance Option:
- Suitable for applications where dampers are exposed to extended periods of high humidity or high moisture, such as water treatment facilities, municipal pools, and greenhouses.
- Cost effective alternative to the Salt Water Resistance Option for applications where salt spray is not a concern. (See Options for more details.)
SW - Salt Water Resistance Option:
- Ideally suited for coastal climates.
- Recommended for inland applications, where tire spray from winter-salted roads have been known to corrode dampers installed in close proximity to roads or highways.(See Options for more details.)
Air leakage through a 24" x 24" (610mm x 610mm) backdraft damper does not exceed 4.32 cfm/ft² (21.95 l/s/m²) against 1" (0.25 kPa) w.g. differential static pressure at standard air.
MR - Moisture Resistance Option:
- All zinc-plated steel hardware is replaced with stainless steel, protecting hardware from rust and corrosion when exposed to high humidity or high moisture environments.
SW - Salt Water Resistance Option:
- Extruded aluminum frames, blades and hardware are clear anodized to a depth of 0.7 mil. (18 microns). This prevents rusting and pitting when backdraft dampers are exposed to salt spray or high humidity environments.
- All zinc-plated, steel hardware is replaced wtih stainless steel, protecting hardware from rust and corrosion.
- All aluminum linkage hardware parts are clear anodized.
Series 7000 CW Specifications and Performance Data
Series 7000 CW Suggested Specifications
TAMCO Medium-Duty Backdraft Damper Installation Guidelines
Medium-Duty Backdraft Damper Schedule