Brand Name: HX
Model Number: FH
Place of Origin: Tianjin, China (Mainland)
good quality oem galvanized round fire dampers in ductwork
Installed on the air duct of air conditioning and ventilation system, the fire damper is normally open but closed
automatically at 70℃(280℃)to babble smoke and retard fire.
At 70℃(280℃), the fuse reacts and the fire damper closes automatically. There is a gripe fixed on the fire damper
which can be used to adjust the angle of the blade and change the air volume. It’s possible to put up the interlocked
electric signal device if requested by the user.
Product Drawing
Material |
Galvanized steel sheet |
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Specification |
Φ to fit the size of air pipe. |
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Leakage Rate(differential pressure300Pa) |
≤500m³/m2·h |
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Fully open resistance coefficient |
<0.5 |
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The valve fire resisting rating |
1.5h |
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Fuse acting temperature |
70℃ |
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Control Voltage |
DC 24V |
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Action Current |
0.3A |
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Micro switch node capacity |
AC 380V 3A |
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Fully open resistance coefficient |
<0.5 |
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Features |
It is usually open . But when the temperature inside the air duct reaches 70℃, the fused breaks and the damper will close with the force of spring and it will stop the smoke and fire to extend in the air pipe. Manual reset. When it is fully open, the resistance factor ≤0.5 |
Damper Production
Main Dampers