Low NOx and CO gas-fired burners, EN676 “Classe III”. Single stage operation (on/off). Compatible with any type of combustion chamber, according to EN303 standard. High blowing efficiency, low electrical input, low noise. Air-gas mixing at blast-pipe. Burnt gas recycling blast-pipe able to achieve very low pollutant emissions, particularly with regard to nitrous oxides (NOx). Maintenance facilitated by the fact that the mixing unit can be removed without having to remove the burner from the boiler. Control of comburent air flow. Gas regulation by means of a two-stage working valve that is electromagnetically driven. Ability to add a valves seal control device to the train. Comes with a 7-poles connector, 1 flange and 1 insulating seal to connect the burner to the application.