For a real good oil less and moisture free air compressor system check=20 out a dental supply house. Call the largest dental office in the area=20 and ask where they get their air compressor from. They are not cheap but put out the cleanest air possible. I got one for $50 from a smaller 2 dentist office. While they were=20 moving to a new office the movers dropped theirs and the insurance=20 bought a new one. The one dentist kept the old broken one but when he=20 bought a new house he did not want to move it. I bought it at his=20 moving sale. When I researched it to buy a used one like it would cost=20 about $5,000. OLD BOB M.L. wrote: > On Fri, Feb 4, 2011 at 12:14 PM, graham foulkes wro= te: > =20 >> Hi >> Maybe a smaller separate compressor unit to provide 'clean' i.e. oil/wat= er >> free air for the processes that require it could answer your needs. I wo= uld >> suggest looking at Gast oil free vane compressors. These have dry lubric= ated >> graphite vanes as the rotating elements. This approach would give you bu= lk >> 'shop air' from an oil lubricated compressor and 'clean' air from a sepa= rate >> compressor. Of course, you will still have to use filters and traps to >> minimize water build up in air lines and reservoirs, usual good housekee= ping >> practices. >> In answer to you question, "am I just being over cautious"? No way! If t= here >> is a chance of oil getting into your equipment, it will. Even the best o= il >> lubricated compressors will occasionally spit oil, and oil mist is prese= nt >> in all types of oil lubricated compressors. Good clean air needs filtrat= ion >> and trapping and relies on good maintenance and regular blow downs and >> filter changes. Another alternative is a diaphragm type compressor, but >> these do not usually supply shop pressures or volumes, more used as pain= t >> spray units. >> =20 > > =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .