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HVAC Duct System Rectangular Fire Dampers AC380V 3A Micro Switch

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Henan Shuangxin Fire Environmental Protection Equipment Manufacturing Co., Ltd.

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HVAC Duct System Rectangular Fire Dampers AC380V 3A Micro Switch

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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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 number	name		performance parameters
1	Standard flange specifications		Valve long side b or diameter D (mm)	Flange side width (mm)
			D≤280	20
			280≤D≤630,b≤630	25
			630＜D1250,630＜b≤1250	30
			1250＜D≤2000,1500＜b≤2500	40
			D＞2000,2500＜b≤4000	50
2	Temperature sensor		valve static nominal operating temperature 70℃ (valve closes automatically)
3	Material	Valve body	2~3mmQ235-A
		Bles	2mm708-88 Cold rolled plate
		Axshaft	GB905-82 Cold pull round steel Ф12
		Axft sleeve	Oil-containing metallurgical powder copper sleeve
4	Local resistance coefficient		Resistance coefficient of ≤ 0.5 at full opening
5	Paint treatment		Ground floor rust proof primer (second floor), outer fire proof paint (medium ash steel paint)
6	Rated voltage		DC24V±10%
	Rated current		0.7A
	Micro switch		AC380V,3A
	Torque		10~70Kg.f/cm
	Action mode		automatic, electric, manual or 70℃ to close the valve
7	Fire control valve		Reset method (open state)	Manual reset
	Smoke and fire control valve			Manual reset
	Smoke and fire damper			Manual reset
	Remote control smoke and fire damper			Remote control manual reset
	Automatic reset fire damper			Electric reset
8	Air leakage		In 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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