Spiral Duct Regulating Damper

1.The regulating damper is made of galvanized steel
2.With a damper blade to controll the air flow.
3.The blade rotation angle can be adjusted from 0°to 90°

Spiral Duct Regulating Damper


1.Our regulating damper is made of galvanized steel,which is widely used in ventilation area.

2.The air flow through the damper is controlled by the opening angle of the blade.

3.The angle of blade can be adjusted by a handle manually.

4.For the purpose of fixing blade,it’s fixed by a bolt with a wing-nut weight.


Φd(mm) L(mm)
100 100
125 100
150 100
200 100
250 100
315 100
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