Smoke Damper
KSD-333
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SKU: KSD-333-SMOKE-DAMPER
In Stock
The KSD-333 is a UL555S Classified ultra-low leakage smoke damper designed for dynamic smoke management systems and applications requiring reliable smoke control. It is suitable for both vertical and horizontal installation, with airflow in either direction.The damper is engineered to operate under dynamic conditions with a maximum static pressure of 4 in. W.G. (1000 Pa), maximum airflow velocity of 4000 FPM (20.3 m/s), and operating temperature up to 350°F (177°C).
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Technical Specifications
| Model | KSD-333 |
|---|---|
| Product Type | Smoke Damper |
| Classification | UL555S |
| Application | Dynamic Smoke Management |
| Leakage Rating | Ultra-Low Leakage |
| Mounting Orientation | Vertical and Horizontal |
| Airflow Direction | Both Directions |
| Maximum Static Pressure | 4 in. W.G. (1000 Pa) |
| Maximum Air Velocity | 4000 FPM (20.3 m/s) |
| Maximum Operating Temperature | 350°F (177°C) |
| Frame Material | Galvanized Steel |
| Frame Thickness | 16 Gauge (1.6 mm) |
| Blade Material | Galvanized Steel |
| Blade Thickness | 16 Gauge (1.6 mm) |
| Blade Design | Three-V Formed |
| Bearing Type | Oil-Impregnated Sintered Bronze |
| Axle Material | Zinc-Plated Steel |
| Axle Size | 1/2 inch (12.7 mm) |
| Linkage Material | Zinc-Plated Steel |
| Jamb Seals | 300 Series Stainless Steel |
| Blade Seals | Silicone |
| Blade Seal Temperature Rating | 450°F (232°C) |
| Standard Finish | Mill Galvanized |
| Sleeve Shape | Rectangular |
| Actuator Type | Electric Spring Return or Pneumatic |
| Actuator Voltage | 24V, 120V or 230V |
| Minimum Size | 8 x 8 inches (203 x 203 mm) |
| Maximum Size | 36 x 36 inches (914 x 914 mm) |
| Standards | NFPA 90A, NFPA 92A/B |
| Optional Bearings | Stainless Steel |
| Optional Construction | Stainless Steel |
| Optional Sleeve Shapes | Round, Oval and Special |
| Actuator Mounting | Internal or External |
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