copper vs pvc compressor lines?

I've read some places to not used galvanized for air because little "flakes" can break off and get in your air stream. But, I would think they would be big enough for a filter to easily remove? I don't know. I have no experience with it myself, just saying what I've read in case anyone else has any add'l experience using it. I'd sure like to know in case I ever need to replace what I have.

I didn't use galvanized myself, just regular black iron, and so far so good. If I had any sort of plastic pipe, I would make my very next expenditure iron for safety.

I can say I have never seen an issue myself but I won't say it can't because I can't say for sure.

I used to work for Mercury Marine/Mercruiser in the maintenancedepartment and galvanized is what we had in the entire building, even on all three paint lines. We was running 160psi if my memory is correct.

When I opened up my mattress company I used galvanized throughout all the manufacturing area and on all the pneumatic operated machines/cutters . I never saw anything from the inside of the lines.

We ran galvanized in a buddy's body shop and he never had issues with it.

I will note that all this was 1988 and before with American manufactured pipe so maybe things may have changed with all the imported pipe.

I will call my buddy that owns Kicker Corporation and see what they are using since they moved in to a bigger set up about 5 or 6 years ago.