I have to ask this question as I haven't received a good answer yet...
What about using a 'medical grade' air compressor. I have an older Dental compressor and an external air dryer/filter. It is oil lubed, but I can't detect ANY smell from the air after it has gone through the dryer filter.
I am thinking of tapping off of the line I use in my shop, regulate it down to 5-7PSI, add a new inline filter/seperator for safety factor, then plum into my tanks. This would delete 2 underpowered air pumps and one old broken pump(but the strongest!).
Has anyone ever used such a set up in a LFS enviroment? I am planning on an eventual upgrade to oil-less when the oportunity arrises, but my job revolves around clean dry air to dentists (crowns don't stick to dirty teeth!), I am confident that the air will be fish safe...Just the pressure and flow of the air my pose an issue...The A/C is meant to cycle on and off during the hours, it isn't meant for 100% duty cycle.
Thanks for any comments!