Product Details
Product Introduction:
Our company manufactures smoke‑exhaust fire dampers, which are primarily installed in supply and exhaust ductwork or smoke‑exhaust ducts of ventilation and air-conditioning systems. Under normal operating conditions, these dampers remain open; in the event of a fire, they automatically close when the temperature of the flue gases in the duct reaches a preset threshold. They meet specified requirements for fire resistance and integrity over a defined period, thereby preventing the spread of smoke and flame. These dampers are indispensable safety devices in building fire‑protection systems.
General technical parameters (taking the mainstream 280°C smoke and fire damper as an example):
| Parameter Item |
Specification Details |
| Product Name |
Smoke exhaust fire damper (section) 70℃ fire damper and 280℃ smoke exhaust fire damper) |
| Nominal size |
Rectangular specifications: 200×200 mm to 2000×2000 mm (custom non-standard sizes available); circular specifications: φ100 to φ1000 mm |
| Fusion temperature |
70°C (for supply and exhaust ventilation systems), 280°C (for smoke exhaust systems only) |
| Control method |
Manual control, electric control ( DC 24 V / AC 220 V), fire alarm linkage control |
| Fire-resistance rating |
1.5 h (compliant with GB 15930 standard) |
| Valve body material |
Galvanized steel sheet (standard), with stainless steel available as an option. |
| Executing agency |
Electric actuator (Protection class IP54, with feedback signal |
| Power Supply Specifications |
DC 24 V (commonly used in fire protection systems), AC 220 V optional |
| Applicable medium |
Air, flue gas, medium temperature ≤280℃ |
| Installation method |
Horizontal installation / Vertical installation, flange-to-flange piping |
| Reset method |
Manual reset; the electric version supports electric reset. |
| Protection rating |
IP54 (actuator) |
| Work environment |
-10℃ to +60℃, relative humidity ≤95% (no condensation) |
Applicable Scenarios and Selection Recommendations
Core use cases:
1. Building smoke-exhaustion system ductwork (e.g., smoke-exhaustion ducts in shopping malls, office buildings, underground parking garages, and tunnels)
2. Supply and exhaust ductwork of the ventilation and air-conditioning system (70°C fire damper)
3. Ventilation ducts that pass through fire compartments, as well as ventilation ducts for equipment rooms and electrical distribution rooms.
4. Kitchen fume extraction ductwork (must use a high-temperature‑resistant, dedicated model)
Key considerations for selection:
1. Select equipment based on system type: Smoke exhaust systems must be equipped with 280°C smoke‑exhaust fire dampers, while supply and exhaust ventilation systems must use 70°C fire dampers; the two types must not be interchanged.
2. Select based on duct size: Prioritize models that match the duct’s inner diameter to avoid installing reducers, ensuring that airflow and static pressure remain unaffected.
3. Control Mode Compatibility: When interfacing with the fire‑alarm linkage system, it is mandatory to select a model equipped with electric actuation and feedback signals to ensure seamless integration with the fire control room.
4. Installation requirements: Install at locations where fire compartments are traversed, on partition walls and floor slabs in fan rooms and air-conditioning machine rooms, and on partition walls and floor slabs in important rooms or rooms with a high fire hazard.
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Mobile phone:+86-188-6602-0062
Email:sddljnhb@163.com
Website:http://www.sddljnhb.com
Address: No. 5166, Tianqu East Road, Economic Development Zone, Dezhou City, Shandong Province
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