Main uses of smoke exhaust valve and fire damper

The main purpose of smoke exhaust valve and fire damper is provided by Wenzhou Fengquan valve: the fire damper is used in the air supply and return pipelines of ventilation and air conditioning system, which is normally open Once the fire occurs, the gas temperature in the pipeline reaches 70 ℃, it will close automatically, and meet the requirements of fire stability and fire integrity within a certain period of time, so as to play the role of smoke and fire resistance The smoke exhaust valve is used on the pipeline of smoke exhaust system or at the suction of smoke exhaust fan, which is normally closed When a fire occurs, the valve is opened manually or automatically through the fire alarm signal, and the smoke exhaust is coordinated according to the system function When the temperature of the flue gas in the pipeline reaches 280 ℃, it is automatically closed, and can meet the requirements of fire resistance stability and integrity within a certain period of time, so as to play the role of smoke and fire resistance 。 Ventilation, air conditioning and smoke control systems are set up in high-rise buildings and other modern buildings In case of fire, the pipes in these systems will become the passage for flame and smoke to spread In order to prevent the fire from spreading and expanding through the air duct, the setting requirements of fire damper and smoke exhaust valve are clearly specified in code for fire protection design of buildings (gbj16-87) and code for fire protection design of high rise civil buildings (GB50045-95)