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HVAC Duct System Rectangular Fire Dampers AC380V 3A Micro Switch

Categories HVAC Fire Dampers
Place of Origin: China
Brand Name: SX
Certification: CE,ISO9001
MOQ: 1 Set
Price: Negotiation
Packaging Details: Standard Export Wooden/Nude packing
Delivery Time: To be negotiated
Payment Terms: T/T; L/C
Temperature sensor: valve static nominal operating temperature 70℃ (valve closes automatically)
Item: Fire Damper
Valve body Material: 2~3mmQ235-A
Local resistance coefficient: Resistance coefficient of ≤ 0.5 at full opening
Rated voltage: DC24V±10%
Rated current: 0.7A
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    HVAC Duct System Rectangular Fire Dampers AC380V 3A Micro Switch

    Fire Damper

    Fire dampers are passive fire protection products used in heating, ventilation, and air conditioning (HVAC) ducts to prevent the spread of fire inside the ductwork through fire-resistance rated walls and floors. Fire/smoke dampers are similar to fire dampers in fire resistance rating, and also prevent the spread of smoke inside the ducts. When a rise in temperature occurs, the fire damper closes, usually activated by a thermal element which melts at temperatures higher than ambient but low enough to indicate the presence of a fire, allowing springs to close the damper blades. Fire dampers can also close following receipt of an electrical signal from a fire alarm system utilising detectors remote from the damper, indicating the sensing of heat or smoke in the building occupied spaces or in the HVAC duct system.


    Fire damper performance parameter table
    Serial numbernameperformance parameters
    1Standard flange specificationsValve long side b or diameter D (mm)Flange side width (mm)
    D≤28020
    280≤D≤630,b≤63025
    630<D1250,630<b≤125030
    1250<D≤2000,1500<b≤250040
    D>2000,2500<b≤400050
    2Temperature sensorvalve static nominal operating temperature 70℃ (valve closes automatically)
    3MaterialValve body2~3mmQ235-A
    Bles2mm708-88 Cold rolled plate
    AxshaftGB905-82 Cold pull round steel Ф12
    Axft sleeveOil-containing metallurgical powder copper sleeve
    4Local resistance coefficientResistance coefficient of ≤ 0.5 at full opening
    5Paint treatmentGround floor rust proof primer (second floor), outer fire proof paint (medium ash steel paint)
    6Rated voltageDC24V±10%
    Rated current0.7A
    Micro switchAC380V,3A
    Torque10~70Kg.f/cm
    Action modeautomatic, electric, manual or 70℃ to close the valve
    7Fire control valveReset method (open state)Manual reset
    Smoke and fire control valveManual reset
    Smoke and fire damperManual reset
    Remote control smoke and fire damperRemote control manual reset
    Automatic reset fire damperElectric reset
    8Air leakageIn the standard state, when the pressure difference on both sides of the valve is 500Pa after the valve is closed, no more than 700mm³/㎡/h

    Hebei Iron and Steel Qian'an Steelmaking Plant

    Henan Shuangxin (formerly known as Tongbai Shuangxin Ventilation and Water Supply Equipment Manufacturing Co., Ltd., often referred to as Tongbai Shuangxin), the company's factory is located in Tongbai County, Henan Province, and is mainly responsible for the production and research and after-sales technical services of the company's products
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