Moulded tubs with rounded corners, made of AISI 316 stainless steel for maximum corrosion resistance. Water loading by means of solenoid valve with the possibility of fast or slow loading. Stainless steel water outlet and floor drain. Safety pressure switch to prevent activation of heating without water in the tank. Heating by means of an AISI 304 steel armoured heating element located in the tank and rotatable by 90° for easy cleaning.