Marine Rectangular Fire Damper

Marine Rectangular Fire Damper

1. 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℃.

2. 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
	Rectangle
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.
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.

3. 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

4. Notice of order

DN	d1	D1	Flange	n
100	106	136	155	6
125	131	161	180
150	156	186	205
175	181	211	230	8
200	206	236	255
250	256	286	305
300	306	336	355	12
350	356	386	405
400	405	436	455
450	460	492	510	16
500	510	342	560	20
600	610	642	660
700	710	742	760	24
800	810	842	860	28
900	910	942	960
1000	1010	1042	1060	32

6. Outline drawing

7. Our Inventory:

8. IACS Certificate: DNV▪GL, LR, KR, ABS, CE, CCS, BV