HVAC System Fire Damper

HVAC System Fire Damper

Features
The fire damper used for resisting fire in HVAC duct system. The fire damper could be shut off automatically at once to prevent the fire spreading along air duct when it fired and the temperature in air duct got to more than 70℃.
Our fire damper are especially designed for sea environment, and widely used for navy vessels, off-shore platform and underground projects etc. The fire damper could effectively hinder hydrosphere and fog in duct, and work well in this environment.

Configuration Options:

		Features
Control Mechanism	Manual	On-site manual operation
	Electric	It can be manually operated on-site and can be controlled remotely.
	Pneumatic	It can be manually operated on-site and can be controlled remotely. Pneumatic fire dampers are generally installed in hazardous areas.
Shape	Round	User specified
	Rectangle	User specified
Explosion-proof Requirements	Explosion-proof	For use in hazardous areas, containing explosive gases
	Non-explosion proof	It is installed on the air duct of the ventilation and air-conditioning system with fire protection requirements.
Protection Degree	IP44/IP56/IP65/IP67	User specified
Explosion-proof Degree	Exd II BT4~BT6 Exd II CT4~CT6	User specified
Material	Carbon steel	Higher hardness and better wear resistance can be obtained after heat treatment. The hardness in the annealed state is very moderate, and it also has good machinability. Raw materials are very common, simple and easy to obtain, and the production cost is relatively low.
	Stainless steel	It has good plasticity, toughness, weldability, corrosion resistance and non-magnetic properties, and has good corrosion resistance in oxidizing and reducing media.

Specific Difference Between Us and Other Suppliers

Comparison
Product Picture of other low quality supplier		Product Picture of our factory
Other low quality supplier	Consequence	Our Factory	Consequence
The installation accuracy of the connecting rod between the baffles is not enough	As a result, when the fire damper is closed, the shutter still cannot be completely closed.	The connecting rod between the baffles is installed with high precision	When the fire damper is closed, the shutter can be fully closed.
The thickness of the damper shell does not meet the requirements	The casing is prone to breakage	The thickness selection of the damper shell The regulations of each classification society are consistent with the SLOAS requirements	The shell meets the requirements, and the damper can be used for a longer time
The fire rating does not meet the requirements	It is easy to leave a safety hazard	Select as required	Product use more assured, longer service life
Air leakage does not meet the requirements	Excessive air leakage from fire dampers will cause major safety hazards	Airtight performance is selected according to requirements	The air leakage meets the requirements, and the product is safer to use

Main technical parameter

Iterm Types	Manual fire damper	Electrical fire damper	Pneumatic fire damper
Fusing temp.	70±3℃	70±3℃	70±3℃
Closed time	＜2s	＜1s	＜2s
Air leakage ate	≤5m³/m².h	≤5m³/m².h	≤5m³/m².h
Air source pressure	---	---	Compressed air of 0.5~0.8MPa
Control voltage	---	DC24V/AC110V/AC220V
Protection degree	---	IP44/IP56/IP65/IP67
Explosion-proof degree	---	ExdⅡBT~BT6 ExdⅡCT4~CT6

Picture in the factory

Maintenance:
1. Regularly test all the air locks and air lock shutters of the whole ship every week, manually switch it several times, check whether the signal output is consistent with the working state of the sausage, and make corresponding records;
2. Regularly and quantitatively apply some lubricating oil to the blades of the damper shutters;
3. Check the action of the two-position three-way solenoid valve on site at least once a week.
IACS Certificate: LR, CE, ABS, DNV•GL, KR, BV, CCS