Maintenance unit, two-piece, multi-fix range Design: Two-part maintenance unit. Comprising a reversible diaphragm pressure regulator independent of supply pressure with secondary ventilation, combined with a centrifugal separator and a proportional lubricator. Application: To clean, regulate and oil compressed air from pneumatic tools, cylinders, valves and lots more. Note: Flow rate measurement: at P1 = 8 bar, P2 = 6 bar and pressure fall delta p = 1 bar.