Professionally prior to retirement last year I sold serviced and supplied large dental equipment. Dental drills (mostly) run on compressed air. Wet air is a big issue, both for hygiene (water is life) and miniature dental turbines spinning at up to one half million RPM. A little water is a big issue. A dental compressed air system supplies my home air pressure needs, the beauty being air dried to a -150 degree dew point, and 5 micron filtration feeds El Cheapo my Yong Heng knock off regulated down to 5-10 PSI at the pump inlet. I have the big gold filter and use it, I could likely eliminate it. Checked it after a bottle fill and several refills, like new inside zero evidence of moisture. No evidence of any moisture when bleeding down, none. Extra filtration never hurts justs wastes a little more air when bleeding down for disconnect. Hope I am not boring you all to death with El Cheapo as I'm uncertain how my setup could be duplicated inexpensively, like high end scuba compressors, the price of a dental air system will get your attention. In my experience desiccant dried air is superior to refrigerated dryer systems, a measure of that is the dewpoint of the compressed air product. I am a fan of desiccant type air drying systems, based on decades of experience where dry air really does matter. Desiccant drying is done just post compression prior to the storage tank hot wet air flows through a large tube of Silica gel, a secondary tank back flushes the desiccant stack with each pump up cycle. A similar system could be duplicated inexpensively to add on to a shop compressor.
