 Um.. how about a dryer/water seperator.. or simple inline filter or filter with a dessicant. Many places sell combination oiler/water seperator/regulators prett cheap. I use one that I have simply never put oil in. TSC sells disposable inline air filters for painting or plasma cutter use.. they are good for xx hours or xx air flow.. some have dessicants.. etc. I've painted a few tractors with cheap-o chinese tool store paint gun, air compressor and regulator/dryer/oiler(no oil ).. and had superior results 2x to 3x better looking than rattle can and brush/roller paint jobs. Here's the rear pic of my allis G I painted earlier this year... 2 coats.. with hardener.. had a primer base coat and lots of metal prep. TSC paint, hardner, primer. This is while it is curing.. before application of decals. See that shine... you can see yourself inthe finish.. it's like a car paint job. that tractor is waxed and parked in the garage right now.. Soundguy
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