Moulded upper surface machined from a single sheet of thick stainless steel. Large-capacity contoured firing tanks with large vertical expansion zone that prevents foam from settling during loading. Automatic regulation thermostat of the Fire safety thermostat (230°C). Oil drain taps. Holder for baskets and lids. Gas models Tubular steel burners outside the tank. Oil drain taps. Piezoelectric ignition of the pilot burner. Electric models Liftable and removable stainless steel armoured heating elements. Optical signal when the programmed temperature has been reached. Indicator light "equipment under voltage.