The DDA type Smoke Evacuation Damper are designed for preventing the spreading of smoke in air ducts.
Specifications
These dampers are used in rectangular ducts. The blades are placed with a pitch of 100 mm and are shaped to overlap each other when closed; thereby minimizing leakage. The blades have parallel motion, being connected with a steel link. The damper body is self-flanged and contains the servomotor mounting bracket.
Order form