Painted steel structure with stainless steel panels. Flame control photocell. Delayer total stop with leakage control. Automatic bypass valve. Safety valve. Temperature adjustment thermostat (flow switch and pressure switch). Stainless steel High-Efficiency vertical boiler. Ventilation by an independent electric motor. Stainless steel water tank with floater to control the water level: machine stop in case of low-level water. Electric antiscale. Flexible coupling between pump and B3 B14 motor. High-pressure chemical suction. 24V low tension electrical controls. Magnetothermic overload switch.