Industrial Flue Gas Non Return Damper

Industrial Flue Gas Non Return Damper, which opens and closes automatically via the force of the medium’s airflow. Prevents flue gas backflow when the fan is shut down, without the need for an external actuator.

Applicable media: Flue gas, hot air, dust-containing gas

Operating temperature: ≤400°C

Common Materials: Q235B, Q355B, SS304

Drive Type: Self-acting (no actuator) | Self-acting, no actuator

Seal Rating: Anti-backflow function (non-zero leakage)

Standards: ISO 5752, GB/T 13927

Key Selection Parameters

1. Pipe cross-sectional dimensions; 2. Medium temperature; 3. Normal flow velocity; 4. Reverse design pressure; 5. Dust content