Beteccad QFD-SGB-F-30-A-R Fire Damper (3-Hour Rating, Round Duct)
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Product description
The Beteccad QFD-SGB-F-30-A-R is a high-performance fire damper designed specifically for round duct connections in commercial and industrial HVAC systems. Certified to UL-555 standards, this damper provides a robust 3-hour fire rating, ensuring effective compartmentation to prevent the spread of fire and smoke through air distribution systems during an emergency.
Constructed with durability and precision in mind, the unit features a standard frame made of 16-gauge (1.4 mm - 1.7 mm) thick stainless steel, offering superior resistance to corrosion and mechanical stress. The blades are parallel-operated, 3 'V' type designs crafted from 16-gauge galvanized steel, ensuring tight sealing and minimal air leakage when closed. Jamb seals are also made of stainless steel to maintain integrity under high-temperature conditions.
The damper includes a 12 mm diameter galvanized steel jack shaft and a mild steel spring (30 lb) for reliable operation. The manual operator quadrant is paired with a standard 165°F fusible link, which automatically closes the damper upon reaching the specified temperature. The sleeve is designed with a minimum thickness of 0.9 mm, compliant with NFPA Table 3-4.6.3, and is available in single-section (field or factory installed) or multiple-section (factory installed) configurations. Optional fittings include 1½” x 1½” x 16 gauge retaining angles, and the unit comes with silicon rubber blade seals for enhanced airtightness. An externally mounted indicator provides clear visual confirmation of the open or closed status.
- UL-555 certified with a 3-hour fire rating
- Stainless steel frame and jamb seals for corrosion resistance
- Parallel-operated 3 'V' type galvanized steel blades
- Manual operator with 165°F fusible link (custom temperatures available upon request)
- Compatible with round duct connections via neck adapter
- Complies with SMACNA, NFPA, IBC, BOCA, and ICBO standards
- Externally mounted open/close indicator for easy monitoring
