Air Damper, Volume Damper, Volume Control Damper manufacturer / supplier in China, offering Fire Damper Motorized Air Damper, Air Conditioning Linear Slot Diffuser for HVAC, Access Door for Ventilation System and so on.
|Purchase Qty. / Reference FOB Price|
|100-999 Pieces||US $11|
|1,000+ Pieces||US $10|
|Payment Terms:||T/T, Western Union|
|Usage:||for Experiment, for Air Conditioner, for Refrigerate|
|Material : galvanized steel sheet|
size: (WxH) according to air duct sizel
Usually is closed, when on fire, smoke sensors output electric signal (dc24v) through control center, and the electromagnet in the actuator acts, damper is automatically opened and outputs the open electric signal.
Direct current electromotor drives to reset after damper acting .
Damper can be opened manually opened.
Manual reset is needed after the damper acting .
When the temperature getting up to 280°C,the fuse will act and the damper is automatically closed.