Capable of operating in humid and dusty environments, the AWS and AWD units by Atlas Copco are designed to deliver vacuum to a variety of industries including food and beverage processing; mining and minerals; petrochemicals; steel; cement; plastics; pulp and paper; textiles and pharmaceuticals.
Capacities for liquid ring pumps typically range from 170 to 37,500 m³/h. Lower capacity units below 5500 m³/h are available as single-stage AWS models or two-stage AWD models pre-configured with direct-drive options in 50 and 60 Hz speeds. For larger installations, high capacity AWL pumps with belt or gearbox transmission are available.
Single stage AWS pumps offer outstanding efficiency above 200 mbar (absolute), making them ideal for general process applications such as filtration and dewatering, and pump down or evacuation duties.
Meanwhile, the two-stage AWD pumps provide continuous high performance at operating pressures below 200 mbar (absolute). Two synchronised pump chambers work in series to achieve high performance and improved efficiency on continuous process duties such as drying, degassing exhausting and solvent recovery.