TVD-SB-40-B Stainless Steel Fire & Smoke Damper
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Heavy-duty opposed-blade fire damper with 4-hour vertical fire rating, 250°C operational rating, and pneumatic actuation for HVAC systems.
in stock
Product description
The TVD-SB-40-B is a high-performance fire and smoke damper designed to meet stringent safety standards for commercial and industrial HVAC installations. Constructed from 2mm thick stainless steel, this damper ensures long-term durability and resistance to corrosion in demanding environments. It features an opposed-blade configuration with aerofoil blades that minimize pressure drop while maintaining effective airflow control.
Key Technical Features
- Fire Rating: 4 hours vertical and 3 hours horizontal as per BS 476 standards.
- Leakage Rating: Class I at 350°F as per UL 555S, ensuring tight sealing.
- Operational Rating: Capable of withstanding 250°C for 2 hours (HKFSD compliant).
- Material: 14-gauge (2mm) stainless steel frame and roll-formed aerofoil blades.
- Seals: High-temperature resistant silicone rubber blade seals and stainless steel jamb seals.
- Actuation: Pneumatic actuator with optional limit switches for open/close indication.
- Durability: Designed for 3.5 million fatigue cycles under simulated transient pressure reversals.
- Performance: Handles air velocities up to 4000 fpm (20 m/sec) with a max holding pressure of 20" W.g (5 kPa).
Ideal for ductwork systems requiring reliable fire containment, this damper integrates seamlessly into HVAC networks. The concealed high-temperature ball bearings and 19mm axle ensure smooth operation and reduced maintenance requirements.
