Air Breathers PFD8A

This 8-inch PFD assembly helps keep moisture and particulate out of vented reservoirs. A desiccant bed dries incoming air while a 1-micron particulate stage captures fine solids, supporting cleaner fluids and longer component life. The isolation valve system routes only incoming air through the media and prevents reverse flow, which helps avoid desiccant poisoning by oil vapor. A sight-window supports quick inspections, and the spin-on canister enables simple, tool-friendly service. Install vertically and size within the recommended maximum of 7 SCFM. Service life depends on humidity and the volume of air the reservoir breathes per cycle. With an operating range from -65 F to 180 F, this compact assembly suits hydraulic power units, fuel and lube storage, and other vented systems that benefit from dried, filtered intake air.