Type:

1.Manual damper: The current application is more open multi-leaf damper, its role is to branch duct system for manual air volume adjustment and distribution, without remote self-control, only through the initial balance of the adjustment to achieve the requirements of the system air volume distribution, its application is relatively simple.

2.Electric damper: installed in the air conditioning, ventilation system on the air duct, used to adjust the air volume of the branch pipe, can also be used for fresh air and return air mixing adjustment. It adopts electric power to open or close the damper, and outputs open and close electric signals. Supported with the automatic control system, automatic control of air volume adjustment. The electric actuator should have the function of remote electric control and on-site manual control, and set up manual/electric operation switching handle, with mechanical and electrical two kinds of limit devices, and with electric control start-stop, hand/automatic conversion, fault alarm, start-stop status feedback and other functions.

3.Smoke and fire damper: Installed in the ventilation and air conditioning system of the supply and return air ducts, to prevent smoke and fire. Usually divided into two types of electric and manual, the same point is that their usual work are normally open state, the fuse closure temperature are 70 ℃, the damper can be adjusted to open; the difference is the way of action and reset, electric is through the input of electrical signals (DC24V), the actuator within the electromagnet energized action, the damper closes automatically; manual is manually closed or 70 ℃ fuse action closure.

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