Burners for heavy oil hi/low flame (two stages progressive) or PID fully modulating with the addition of the optional modulation kit (digital) and feeder (of temperature or pressure). Fan at high pressurization , combustion head high efficiency and high flame stability, servomotor for the balanced adjustment of air and oil flow. Rationalized disposition of the components with easy acces for the settings and maintenance operations. The adoption of strong components assure long durability also in heavy duty conditions. Supplied complete of nozzle, preheating tank with specific low charge electrical resistances and filter, gasket for installation on boiler, flexible hoses, line filter heated and complete with thermostat and degaser tank.