Features 30 to 300 kw turndown range 10:1 fuel: natural gaspropanelpgproducer gas air & gas pressure at the burner 45 mbar electrodes can be easily replaced. operation with preheated air upto 450ºc separated gas and air inlet, no flashback applications heat treatment furnace continuous galvanizing annealing furnace normalizing and hardening furnace nitriding furnace carbonitriding furnace carburizing furnace