I have just filled 5 guns (=500 shots) from 100 bar up to about 220 bar with a total running time of just 10 minutes on my YongTinh Hang it all.... No oil deposited at filter inlet. No trace of damp on filter inlet. Outside air 18 degrees, RH 75%.. Compressor ran from 20 degrees at start to about 45 degrees at end of each fill. No damp corrosion ever visible in stripped guns.
Filtering dual stage- the first the small one supplied that is not bad on its own. A second larger filter for "peace of mind". The moisture indicator crystals in that one have never changed colour in 3 years. (Which is evidence that the first small filter is doing a good job). I do also cool these 2 with a freezer gel bag wrapped round them, and the guns are cool when filled. 215 bar might drop back to 205 bar.
I started a thread a few months back on "Why do compressors perform better than expected?". No-one argued significantly against that basic premise. Any "corrosion damage" reported (very few cases) could usually be blamed by a secondary factor, such as a grease or lubricant or even an extreme of gross stupidity and neglect.
My conclusion from all the evidence I've assessed is that peace of mind from stacks of filters is good but might well be an expensive and unnecessary luxury.
Filtering dual stage- the first the small one supplied that is not bad on its own. A second larger filter for "peace of mind". The moisture indicator crystals in that one have never changed colour in 3 years. (Which is evidence that the first small filter is doing a good job). I do also cool these 2 with a freezer gel bag wrapped round them, and the guns are cool when filled. 215 bar might drop back to 205 bar.
I started a thread a few months back on "Why do compressors perform better than expected?". No-one argued significantly against that basic premise. Any "corrosion damage" reported (very few cases) could usually be blamed by a secondary factor, such as a grease or lubricant or even an extreme of gross stupidity and neglect.
My conclusion from all the evidence I've assessed is that peace of mind from stacks of filters is good but might well be an expensive and unnecessary luxury.
