FRL units or air treatment units, in German: Wartungseinheiten, are used to clean the compressed air in a pneumatic system. Pneumatic actuators and control valves must work with clean filtered air with a regulated pressure of around 6 bar.
Pneumission produces several ranges and modells of air treament units from M5 to G 1"connection.
Single filters, lubricators and regulators or combined unit such as FR or FRL
With the square guage or classic round manometer.