While they are more heavy duty than aluminium burners, brass retains heat more efficiently and offers more features. Brass burners typically have superior heat retention, as they spread heat more evenly. They are also more resistant to stains or grime than aluminum burners
Full Safety FFD
Liquid overspill on burners
Heavy threshold of air from fan or coolers
Temporary interruption of gas supply
Gas under pressure
The FFD prevents the leakage of harmful gases which can cause gas build-up which may result in injury or sickness and, in severe cases, can be lethal if undetected for too long. All this is automatically taken care of by the flame failure device. So FFD is a very important safety feature.