Plews 56-081 Desiccant Dryer Amflo compact desiccant dryers have been engineered to deliver extremely dry compressed air to protect pneumatically operated equipment from the adverse affects of moisture A regular filter and an oil removal filter should be used as a prefiltering system immediately ahead of the desiccant dryer - a regular filter may be required after the dryer to remove desiccant dust Features an aluminum main body, metal bowl with sight glass, 70 Micron porous polypropylene internal inlet filter, 40 Micron sintered bronze internal outlet filter, 300 psi Max pressure 1/2 inch port size, 1 qt capacity Steel bowl is rated at 250 psi at 120 degrees F; for compressed air systems only - not for use with fluids When desiccant bead has changed Color from dark Blue to Pink the entire desiccant must be replaced or regenerated by placing it in a drying oven at 275 degree F until it turns dark Blue again