The A50 Series of compressed air preparation units allows flow rates to 35,000 lpm. The pressure regulator features an electronic pilot control or an integrated pilot valve. The filter-water-separator is equipped with an automatic drain valve and contamination indicator. All components, including the soft start/stop valve (in 2/2 or 3/2-way design), can handle the demands of offshore and explosion-protection areas, as well as blow-molding machines. The series is used as a master unit, but is suitable for supply pressures to 17.5 bar.