Product Description
The GI Fusible Link Fire Damper is a passive fire protection device designed to prevent the spread of fire through HVAC ductwork where ducts penetrate fire-rated walls, partitions, or floors. Under normal operating conditions, the damper remains fully open. When the ambient temperature reaches the rated temperature of the fusible link, the link melts, releasing the spring-loaded blades to close automatically and restrict the passage of fire.
The fire damper is suitable for commercial, industrial, institutional, and residential HVAC systems and is manufactured to ensure reliable operation during fire emergencies.
Construction Details
| Parameter | Specification |
|---|---|
| Product Type | Fusible Link Fire Damper |
| Material | Galvanized Iron (GI) |
| Frame Material | GI Sheet, 1.2 mm to 1.6 mm Thick |
| Blade Material | GI Interlocking Curtain Blades / Multi-Blade Design |
| Blade Type | Spring Loaded |
| Depth | 150 mm as Standard / Other Sizes as Optional |
| Flange | 25 mm / TDF Flange |
| Axle / Shaft | GI-Plated Shaft |
| Bearings | Brass Bushes |
| Springs | High Carbon Steel |
| Linkage | Fusible Link with Spring Return Mechanism |
| Fusible Link | UL Listed / Equivalent, Replaceable |
| Standard Fusible Link Temperature | 72°C (Optional: 74°C, 95°C, 141°C) |
| Finish | Pre-Galvanized Finish |
| Leakage | Low Leakage Construction |