If you didn't already know, there is a 6000 PSI visual moisture indicator that can let all compressor owners actually know their compressor and filters are removing enough moisture. It runs about $100 including shipping from August industries. Just go to their site and search for "visual moisture indicator)
Visual moisture indicator arrived and was easily added to my Bauer compressor fill whip. With different fittings, it could be attached to any compressor’s output to objectively measure moisture content. For $100 total including shipping, you can continually check that your air is dry enough. No more excuse for guessing or blind faith that your setup is working correctly.
I ordered mine with a 1/4 to 1/4” male fitting and 20/40/60 indicator disc. By positioning the indicator proximal to my whip’s bleed and shutoff valves, I can protect the disc from exposture to atmospheric moisture between fillings. Both ends of the whip are sealed between uses and the air should remain dry in the whip.
If the indicator disc starts to turn pink, the air from the compressor output is too wet > 20%. This will warn if something is awry with my compressor’s air drying system. It’s less likely with a grade E air rated system, but on a home brew, setup with compressors lacking grade E moisture removal, this indicator can save you from tank and equipment damage. At this price, there is no excuse for not objectively knowing your final output moisture level
i also pre-bleed my whip before each fill session in case a tiny amount of moisture is condensed in the whip, I may also add a bleed valve proximal (before) the moisture indicator. That would let me protect the indicator from potential moisture in the fill whip begin cleared by the pre-bleed. That amount should be very little because air in the whip should be very dry at the end of the prior fill episode. I suspect I won’t need an extra bleed valve to protect my indicator.
