Air Systems International BB30-C Coalescing Filter Element

Air Systems International BB30-C Coalescing Filter Element is the Stage 2 coalescing filter cartridge for BB30 Breather Box filtration systems, designed to strip oil aerosols, mists, and ultra-fine particulates from compressed air at a 30 CFM capacity to help deliver Grade D breathing air. This replacement C-filter element is specified for BB30-series units and is listed in Air Systems' BB30 family catalogs as the second-stage filtration component used with BB15 & BB30 models. In field use, the Stage 2 coalescing filter minimizes atomized oils and fine particulates downstream of the initial particulate stage, supporting cleaner air for breathing apparatus and related equipment in industrial settings. The BB30-C kit documentation references replacement O-rings as part of the C-filter assembly, ensuring proper sealing when the element is replaced. Common applications include respirator-equipped work environments, paint and finishing operations, and other settings where clean breathing air is critical.