Marine Manual Fire Damper
1. Introduction:
Marine manual fire damper is another type of fire protection device used in marine applications to prevent the spread of fire and smoke through ventilation ducts and bulkheads. Unlike pneumatic fire dampers, which are activated automatically, manual fire dampers require manual intervention to close or open the damper blades.
2. Configuration Options:
Features
Shape
Round
User defined
Rectangle
User defined
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.
Fire Resistance Rating
A0/A15/A30/A60
User defined
Control Unit
Manual Actuator
It can be manually operated on-site and can be controlled remotely.
Spindle material
Stainless steel
It has a series of characteristics such as excellent corrosion resistance, formability, compatibility and toughness
Explosion-proof requirements
Explosion-proof/non-explosion-proof
User defined
Body Color
Red (standard)
User defined
Type
Airtight: Rectangular
Non-airtight: Rectangular/Round
User defined
3. Specific Difference Between Us and Other Suppliers
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Comparison |
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Other low quality supplier |
Consequence |
Our Factory
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Consequence |
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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 |
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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. |
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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 |
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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 |
Fire damper is open in normal condition;
If the temperature of air within damper duct exceeds 70±3℃, the fusible link of fire will be broken to close the fire damper;
Handle steel dragline could be output locally, the gragline is 1.5m in length;
The electrical signal could be output according to user's requirement;
Fire damper should be reset manually.
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5. Fault Finding:
Fault
Possible causing problems
Recommended action
Solenoid valve leakage
1. Safety problem
2. Maintenance problem(dangerous, money, manpower)
3. The burden of air compressor
1. Replace the solenoid valve with better quality
2. Do monthly inspection of fire damper, deal with any problem immediately
3. Observe the leakage during the inspection
6. Component:
The fire damper consists of control box and field actuator.
The control box also includes the main power switch, solenoid valve, coil and wiring terminals.
The field actuator also includes fusible link, machine controlled valve, brake lining, actuator cylinder.
7. Outline Drawing:
8. Product Showing:
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