Compressed Air Piping

[Too Many Projects]

In my previous shop, I ran 50' of black iron on the ceiling, with 4 moisture drops and ball valves along the system. I don't see getting enough air to properly cool the pipe with long term use to condense the moisture out of the air enclosed in a ceiling/wall. When I ran my blast cabinet for a couple hours, I had moisture all the way to the 4th drop. In an 8 hour pressure pot blasting day, I had to stop halfway thru and let the pipe cool for an hour during lunch to prevent getting moisture in the sand.