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Heavy-Duty, Maintenance-Free, Adjustable

Series 7600 CW
Internally Counterweighted Heavy-Duty Backdraft Damper

Series 1000 damper
  • Each blade is fitted with a fixed internal counterweight.
  • Counterweights are provided to accelerate opening of blades, and to allow blades to achieve the full open position at lower pressures and airflow velocities.
  • TAMCO heavy-duty backdraft dampers are constructed with robust components to withstand up to 12” w.g. (3.0 kPa) of static pressure and velocities up to 3500 fpm (17.8 m/s).
  • Blades are designed with a rounded head. This reduces pressure loss.
  • The Series 7600 CW is manufactured with the same dual bearing system used for TAMCO's control dampers, resulting in dependable, consistent, maintenance-free performance.
  • The sturdy, slip-proof linkage system is located in the frame side.
  • Silicone seals are provided as standard to ensure sealing longevity and remain flexible down to -40° F/C.
  • TAMCO Series 7600 CW is available in four install types: Installed In Duct, Flanged to Duct, Extended Front Flange, and Extended Rear Flange.
  • The Series 7600 CW can be installed for either Horizontal Airflow and Airflow Up operation.

  • Caution: Never use any lubricants, such as grease or silicone on TAMCO dampers.

Series 7600 CW Counterweighted Heavy-Duty Backdraft Damper:

  • Used to accelerate opening of blades and designed to allow opening at lower pressures and airflow velocities.
  • Specifically designed for installations requiring a heavy-duty backdraft damper, subjected to elevated velocities and operating pressures.
  • Recommended for use in high-pressure isolation systems, air handling units, gen sets, and fan inlet or fan outlet locations.

ET - Elevated Temperature Option:

  • Suitable for high heat environments where temperatures may reach as high as 300°F (149°C),and where UL regulated control dampers are not a requirement.
  • For use in back-up generator stations, where excessive heat may be an issue.
  • For test laboratory applications, wherever high-heat conditions may exist.
  • A practical solution in mildly acidic applications, where Celcon bearings may not withstand environmental conditions.(See Options for more details.)

MR - Moisture Resistance Option:

  • Excellent solution for high moisture/high humidity applications such as water treatment facilities, municipal pools, and greenhouses.(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.)

Recommendation: In applications where the humidity level is unusually elevated, or where there are extremely high levels of dust and dirt particles, TAMCO recommends that the damper linkage and bearing system should be cleaned once a year. This can be done by blowing away dust using compressed air. If needed, a domestic-strength steam cleaner can be used to loosen dirt, which can then be blown out with compressed air, along with any remaining water droplets.

ET - Elevated Temperature Option:

  • Heavy-duty backdraft dampers are designed for operation in temperatures as high as 300°F (149°C).
  • Bronze-oilite bearings replace Celcon and polycarbonate bearings.

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 heavy-duty 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 7600 CW Submittal and Performance Data

Series 7600 CW Suggested Specifications

TAMCO Heavy-Duty Backdraft Damper Installation Guidelines

Heavy-Duty Backdraft Damper Schedule