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To maximise the gas tighness, Sammet has a full range of dampers offering the full 100% tightness level. This very demanding requirement can be achieved by adding over pressure of sealing air inside the damper's blade structure. This ensures that not even a smallest amount of gas in the channel could pass through the damper when closed.

Sealing air dampers

Full 100% gas tightness with Sammet's industry-leading damper series

To maximise the gas tighness, Sammet has a full range of dampers offering the full 100% tightness level. This very demanding requirement can be achieved by adding over pressure of sealing air inside the damper's blade structure. This ensures that not even a smallest amount of gas in the channel could pass through the damper when closed.

Sammet's fan-assisted, preheated sealing air

 

Sealing air system is available for many damper types, including louvers, butterfies and guillotines. To avoid corrosion caused by temperature differencies, sealing air can also be pre-heated to suitable temperature better matching the surrounding ducts' conditions.

 

< Flow calculation of a round-shaped sealing air damper