Abstract: A gas filter assembly includes a housing and a gas filter positioned in the housing. The gas filter includes a pleated filter pack, a spacer arrangement which includes solidified bonding material between adjacent pleat legs on the upstream surface of the filter pack, and insert spacers between adjacent pleat legs on the downstream surface of the filter pack.

Abstract: A gas filter assembly includes a housing and a gas filter positioned in the housing. The gas filter includes a pleated filter pack, a spacer arrangement which includes solidified bonding material between adjacent pleat legs on the upstream surface of the filter pack, and insert spacers between adjacent pleat legs on the downstream surface of the filter pack.

Abstract: A filter assembly for removing soot from gas from an engine includes a housing and a filter disposed in the housing. The housing includes a housing body and a cover disposed on the housing body. The housing body has an inlet connection to a gas line of an engine and an outlet. The cover is removable from the housing body without breaking fluid lines to the inlet or the outlet. In one embodiment, a soot filter for removing soot particles from bleed gas from a engine includes a sintered fiber metal medium having a voids volume of about 50% to about 95% and including metal fibers having a diameter about 20 microns to about 100 microns and a nominal length of at least about 100 microns, the sintered fiber metal medium having an upstream surface communicating with bleed gas containing soot particles, a downstream surface communicating with filtered bleed gas, and a bore extending through the sintered fiber metal medium between the upstream surface and the downstream surface.

Abstract: A fluid purifier includes a vacuum separator having a rotating disc disposed inside a chamber which is maintained at a negative pressure. Oil contaminated with a chlorofluorocarbon is introduced onto the surface of the disc, and the disc is rotated to disperse the oil into droplets. Chlorofluorocarbons in the oil are vaporized from the droplets to form a vapor. The vapor is condensed to recover a liquid chlorofluorocarbon.