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Gravity Fire Damper for HVAC Ducts - 70°C Fusible Link / Stainless Steel

Name: Gravity Fire Damper for HVAC Ducts - 70°C Fusible Link / Stainless Steel
Brand: Guangzhou Xingjin Fire Equipment Co.,Ltd.
SKU: FHF-W-K
Price: 7.50 USD
Availability: InStock

Product Details

Place of Origin: Guangzhou,China

Brand Name: XINGJIN

Certification: GSG\TUV

Model Number: FHF-W-K

Payment & Shipping Terms

Minimum Order Quantity: 50 set system

Price: Pricing based on quantity

Packaging Details: Plywood outer box with bubble bag or paper

Delivery Time: 15-20 working days after payment or receipt of L/C

Payment Terms: T/T,L/C

Supply Ability: 30000set/month

Get Best Price

Product Details

Product Description

Product Details

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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Stainless Steel Gravity Fire Damper, 70°C Fusible Link Fire Damper, HVAC Ducts Fire Damper
                              

Mountingstyle:	Flanged Or Sleeve	Material:	Galvanized Steel
Color:	Silver	State:	Normally Open
Finish:	Primer Coated Or Painted	Weight:	Varies By Size And Material
Type:	Easy To Install	Function:	Smoke Exhaust/ventilation
Warranty:	1 Year	Fireresistancerating:	Up To 3 Hours
Airflowcontrol:	Modulating Or On/Off	Size:	Customizable
Design Style:	Modern	Bladetype:	Single Or Multiple Blades
Temperaturerating:	Up To 250°F (121°C)

Mountingstyle:	Flanged Or Sleeve
Material:	Galvanized Steel
Color:	Silver
State:	Normally Open
Finish:	Primer Coated Or Painted
Weight:	Varies By Size And Material
Type:	Easy To Install
Function:	Smoke Exhaust/ventilation
Warranty:	1 Year
Fireresistancerating:	Up To 3 Hours
Airflowcontrol:	Modulating Or On/Off
Size:	Customizable
Design Style:	Modern
Bladetype:	Single Or Multiple Blades
Temperaturerating:	Up To 250°F (121°C)

Product Description

Fire damper

Product Introductionntroduction:
The FHF-W Gravity Fire Damper is a passive fire protection device designed for installation in through-wall and through-floor pipes of ventilation and air conditioning systems. Manufactured from stainless steel or galvanized steel, this damper requires no external power supply or electrical signal to operate. It relies entirely on blade gravity or spring force to close automatically in the event of a fire, effectively preventing the spread of flames and smoke through ductwork.

Product parameters:

Product Name	Classification	Model	Nominal diameter (DN)(mm)	Nominal pressure (PN) (MPa)
Gravity Fire Damper	fire damper	800*500	DN63	35.7
		800*320	DN63	33.7
		1000*320	DN64	39.7
		1000*400	DN65	40.7
		1000*500	DN66	41.7
		1000*1000	DN69	44.7
		1250*400	DN71	46.7
		1250*800	DN74	49.7
		1250*1250	DN76	51.7
		1500*320	DN77	52.7
		1500*500	DN79	54.7
		1500*1000	DN82	57.7

Technical Specifications

Parameter	Specification
Product Name	FHF-W Gravity Fire Damper
Nominal Diameter	DN63 to DN82 (and custom sizes)
Nominal Pressure	33.7 to 57.7 MPa (model dependent)
Activation Temperature	70℃ (standard) / 150℃ (optional)
Normal Position	Normally open
Closing Mechanism	Blade gravity / Spring force
Material Options	Galvanized Steel / A3 Cold Rolled Sheet / Stainless Steel
Applicable Medium	Air, non-corrosive gases
Operating Temperature	≤ 80℃ (during normal ventilation)

Applicable Locations

The FHF-W Gravity Fire Damper is widely used in commercial buildings where HVAC ducts penetrate fire-rated walls and floors. Typical applications include:

Facility Type	Specific Application
Hotels	Fresh air and smoke exhaust ducts crossing fire zones on guest floors
Supermarkets	Central HVAC supply/return ducts penetrating fire walls
Commercial Complexes	Ventilation ducts crossing core walls and fire compartment partitions
Office Buildings	Air conditioning ducts passing through stairwell vestibules and shafts
Shopping Malls	Public area ventilation ducts crossing fire barriers above fire shutters
Hospitals	Clean air conditioning and exhaust systems crossing fire zones
Schools & Libraries	Central ventilation ducts crossing critical fire separations

Product Advantages

1. No Power Required – Pure Mechanical Reliability

No motor, no solenoid, no electronic control module
Closes using blade gravity or spring force
Eliminates the risk of valve failure due to power outage

2. Dual Temperature Activation

Standard 70℃ fusible link (150℃ optional)
When the set temperature is reached, the link melts and the damper closes automatically
Sensitive response with reliable operation

3. High-Quality Materials – Corrosion Resistant & Durable

Valve body options: Galvanized Steel / A3 Cold Rolled Sheet / Stainless Steel
Stainless steel version ideal for cleanroom HVAC systems and kitchen exhaust systems
Surface treatment: electrostatic spraying or galvanized for excellent rust protection

4. Simple Structure – Easy Maintenance

No complex transmission mechanisms, extremely low failure rate
Simple manual reset after fire event (replace fusible link)
Quick and convenient daily inspection

5. Customizable Sizes

Available in rectangular, square, and circular configurations
All sizes can be customized according to customer requirements
Compatible with various duct systems

Fire and smoke exhaust valves:

Fire valves are valves used to block the passage of smoke and flames from a fire area, and to meet the requirements of fire stability and fire integrity within a certain period of time. Our company has absorbed advanced production technologies from both domestic and international sources, combined with our years of research and development on fire valves, to optimize the design and improve the airtightness and flexibility of the valve body. This product has been tested and approved by the National Fire Equipment Quality Inspection Center. When a building catches fire, the flames quickly spread along the ventilation and air conditioning system ducts, causing significant losses in many cases. In order to minimize the losses caused by fires, effective fire prevention and smoke control measures must be taken to control the spread of fire. The reasonable setting of fire dampers in ventilation, air conditioning, and smoke control systems plays an important role.

Product Type:

Fire damper type	Fire damper refers to a device installed on the supply and return air ducts of ventilation and air conditioning systems. It is usually in an open state, but when a fire occurs, it automatically closes when the gas in the duct reaches 70 ℃. Within a certain period of time, it can meet the requirements of fire resistance stability and integrity, and play a role in smoke isolation and fire prevention. Including various products such as gravity fire dampers, fire control valves, fire vents, airtight fire dampers, smoke dampers, electronic self-control smoke dampers, etc.
Smoke exhaust valve type	The smoke exhaust valve is used on the smoke exhaust system pipeline or the suction port of the smoke exhaust fan. It is usually in a closed state. When a fire occurs, the valve is manually or automatically opened through a fire alarm signal. According to the system function, it cooperates with the smoke exhaust. When the temperature of the smoke in the pipeline reaches 280 ℃, it automatically closes and can meet the requirements of fire resistance stability and integrity for a certain period of time, playing a role in smoke isolation and fire resistance. Mainly including smoke exhaust fire dampers, plate type smoke exhaust vents (for ceilings), smoke exhaust vents for vertical shafts, and other products. Fire dampers and smoke exhaust valves are important components in ventilation, air conditioning, and smoke control systems.
Air volume control valve	Air volume regulating valve, also known as air damper, is an indispensable central air conditioning terminal accessory in ventilation, air conditioning, and air purification projects of industrial plants and civil buildings. It is generally used in air conditioning and ventilation system ducts to regulate the air volume of branch pipes, and can also be used for mixed regulation of fresh and return air.

Why Choose Guangzhou Gooven FHF-W Gravity Fire Damper?

✅ Factory Direct: Self-owned production base in Panyu, Guangzhou – quality controlled
✅ Mass Production: Sufficient stock, reliable delivery times
✅ Complete Size Range: Multiple standard sizes in stock; custom sizes available
✅ Competitive Pricing: Factory-direct pricing with excellent value
✅ Widely Used: Serves numerous commercial projects nationwide

Why Choose Us:

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Contacts: Miss. Anna

Tel: 86--18011936582

Fax: 86-20-31000205

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Gravity Fire Damper for HVAC Ducts - 70°C Fusible Link / Stainless Steel

Stainless Steel Gravity Fire Damper

70°C Fusible Link Fire Damper

HVAC Ducts Fire Damper

Technical Specifications

Applicable Locations

Product Advantages

1. No Power Required – Pure Mechanical Reliability

2. Dual Temperature Activation

3. High-Quality Materials – Corrosion Resistant & Durable

4. Simple Structure – Easy Maintenance

5. Customizable Sizes

Why Choose Guangzhou Gooven FHF-W Gravity Fire Damper?

fire control dampers,

fire smoke dampers,

FM200 Fire Suppression System

FM200 Gas Suppression System

HFC 227ea Fire Extinguishing System

FM200 Pipe Network System

FM200 Cabinet System

FM200 Hanging System

FM200 Piston Flow System

NOVEC 1230 Fire Suppression System

FK 5112 Fire Suppression System

Inert Gas Fire Suppression System

CO2 Fire Suppression System

Automatic Fire Suppression Tube

Fire Detection Tube

Rack Fire Suppression Unit

Foam Fire Suppression System

FM200 Cylinder

FM200 Clean Agents