Smoke damper is installed in the exhaust system pipe, within a certain period of time to meet the fire resistance stability and fire integrity requirements, smoke damper and smoke from the fire retardant effect of the valve. Functioning smoke damper operating temperature is generally 280 ℃. Fire, smoke damper can be automatically or manually open for smoke, when the flue gas temperature reaches or exceeds 280 ℃, the valve automatically shut down to prevent the spread of fire. Exhaust fan should be able to ensure continuous operation during 30min at 280 ℃. Smoke damper setup requirements are: 1. exhaust duct into the exhaust fan at the room, smoke damper should be located, and the exhaust fan interaction. The exhaust manifold 2. The exhaust system should be set up smoke damper. 3. On the exhaust pipe must pass through the firewall, smoke damper should be located, and the exhaust fan interaction. 

keywords: Damper, smoke fire damper, fire smoke damper,