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Tandem 2 Damper is a special type of air regulator with two consecutive air vanes, usually designed to be mounted in parallel or perpendicular, used to regulate the flow or completely isolate hot air, gas, exhaust fumes, or superheated gas in industrial systems that require high tightness and precise control.
This is a specialized damper in boilers, heat recovery systems (HRSG), thermal power plants, cement, chemical, metallurgical or petroleum refining – where isolation or regulation of gases at high temperature, pressure, and which may carry dust or corrosive substances is required.
| Parameter | Typical value |
|---|---|
| Configuration | 2 damper levels, insulated spacing |
| Size | DN400 – DN3000 (or as required) |
| Working pressure | From minus 50 mbar to +500 mbar |
| Working temperature | -20°C to +850°C (higher if ceramic/insulation) |
| Body material | Carbon steel, stainless steel 304, 316, Incoloy, heat resistant alloy |
| Damper wing | Welded steel plate, sealed with heat-resistant gasket or metal |
| Control method | Electric, pneumatic, hydraulic, manual |
| Airtight performance | Up to 99.9% (with inert gas/nitrogen between the 2 layers) |
| Leakage-proof level | Class III to Class VI (according to ANSI/FCI) |
