Moulded tubs with rounded corners, made of AISI 316 stainless steel for maximum corrosion resistance. Water filling available by means of solenoid valve with the possibility of fast or slow loading or by means of a mechanical tap located on the control panel Stainless steel water outlet integrated in the expansion zone, and floor drain. Safety pressure switch to prevent activation of heating without water in the tank. Gas version: Heating via stainless steel burner positioned outside the tank. Safety gas valve with thermocouple and electric ignition. Electric version: Heating by means of an AISI 304 steel armoured heating element located in the tank and rotatable by 90° for easy cleaning.