Quote: (Originally Posted by
swampdiver)
The document posted by Brent from the HSE is in fact for low pressure compressor systems and does not apply to the high pressure breathing air compressor systems which follow much tighter moisture limits.
Sorry, you have me confused there, and its not just because of the Karl-like length of the post.
The documents relate to moisture content of breathing gases of all pressures including >200bar pressure. It even gives moisture content of 25mg/m3 for 300bar.
Perhaps there is a mis-understanding here in what you are specifically talking about.