SO4500 Industrial Steam Cleaner 1545000000 - Nilfisk AltoIndustrial Steam Cleaner Nilfisk SO4500 Steam Cleaning Machine Heavy Duty Industrial Steamer The Nilfisk SO4500 is a compact, durable and highly effective industrial steam cleaner designed for medium duty commercial cleaning where steam only cleaning is required. With 4. 5 Bar steam pressure, 150C steam temperature, and a continuous fill boiler, it delivers powerful sanitising performance for schools, workshops, factories, leisure facilities and