The ARO 2000 Series Air Compressor Filter and Regulator sets the standard for airflow performance. These air regulator solutions can keep your facility online and your equipment in shape because we merged best-in-class airflow performance with the flexibility to work in any environment. Filters, regulators, lubricators, and piggybacks can be used together to form combinations. These air regulator solutions are typically strung together in the F+R+L arrangement (three pc. Combo) and F/R+L (two pc. combo) arrangement, although other configurations are also used depending on application needs. ARO-Flo combination air regulator solutions are easily assembled using modular spacer kits.