Compressed air preparation equipment with classic designs and proven quality. Filters, special filters, pressure regulators, mist lubricators and filter regulators with multiple options for filtration grade, purge valves, pressure ranges and vessels. Connection to the maintenance units by means of double couplings. Six sizes with connection threads from G1/8 to G2. Compressed air preparation equipment of the standard series that cannot be used for maintenance units. Filters and microfilters 40bar and 60bar, small pressure regulators, pressure regulators with brass housing, high pressure regulators for 60bar, line pressure regulators up to 150bar outlet pressure, precision pressure regulators, pressure regulators with manometer at the regulating knob, water pressure regulators, external mist lubricators.