U-tube diffusion flame burner assembly having unique flame...
Ultra low emissions burner
Ultra low NO.sub.x industrial burner
Ultra low nox burner
Ultra low NOx burner for process heating
Ultra reduced NOx burner system and process
Ultra-low pollutant emission combustion method and apparatus
Ultra-low pollutant emission combustion process and apparatus
Ultralean low swirl burner
Undulated burner membrane