Winterizeing air pressure
Saw a recommendation to use 80 lbs. air pressure to blow out water lines. My 05 5er has PEC water lines and factory warns against any water pressure over 45 lbs. I would assume that applies to air pre...
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I would actually not recommend using high PSI at the compressor for a different reason. Any moisture in the air in the compressor tank condenses out right at the pressure drop, so if you are putting 80psi right at the adapter between the compressor and the RV water inlet, you are adding moisture to the RV water system. It's better to have a regulator back toward the compressor and a water trap between the regulator and the RV fitting. The water trap will also catch any oil or other gunk coming out of the compressor. If you have an oil lubed compressor, it is likely that some of that will come out the hose. My Quincy commercial compressor outputs air that smells like crankcase oil.
