PAG compressor oil conditioning filter element

A PAG compressor oil conditioning filter element (10) configured for outside in flow comprising:

• a proximal end cap (22) including a central outlet (23) therein;
• a distal end cap (24) spaced from the a proximal end cap (22);
• a cylindrical outer wrap (26) extending between the end caps (22 and 24) having perforations (28) there through on only a portion of the outer wrap (26) adjacent the distal end cap (24), wherein the flow (5) of PAG compressor oil is configured to flow into the element (10) through the perforations (28) in conventional operation, wherein the portion of the outer wrap (26) adjacent the distal end cap (24) having perforations (28) is 3 to 4 cm in length and at least 15% of the length of the outer wrap (26);
• an outer layer of ion exchange polymers beads (30) radially within the outer wrap (26) configured to remove acid from the treated PAG compressor oil, and is an insoluble matrix including 0.45-0.65 mm diameter beads fabricated from an organic polymer substrate;
• an annular particulate removing micro-glass media (34) adjacent the proximal end cap (22) and radially within at least a portion of the outer layer of ion exchange polymers beads (30) and configured to remove particulates from the treated PAG compressor oil, wherein the micro-glass media (34) extends from 5 cm to 15 cm along the length of the element (10) from the proximal endcap (22), wherein a distal end of the micro-glass media (34) is axially spaced from the portion of the outer wrap (26) having perforations (28) whereby the portion of the outer wrap (26) having perforations (28) is positioned axial closer to the distal end cap (24) than the distal end of the micro-glass media (34);
• and
• a central flow area (36) radially within the particulate removing micro-glass media (34) and in fluid communication with the central outlet (23).