Powerful, yet compact three-phase vacuum cleaners for a variety of operations requiring ease of handling even in narrow spaces. Equipped with a co-axial aluminium turbine specifically designed for continuous operation, they are suitable for car washes, the mechanical, textile, chemical and ceramic sector. The SS, equipped with external filter shaker, is suitable for vacuuming dust and solid waste, whereas the S model can also cater to liquid waste. Both equipped with L-class filters, they can also be fitted upon request with M- or H-Class filters i.e. antistatic or heat-resistant filters.