Red oxide is merely a pigment and differs not from white or grey 1k primer. If you are looking for decent non iso primer, then you should be spraying Lechler 29107 or equivalent. I use a Fast Mover LVLP 3006 with a 1.3 nozzle to do that, laying thin coats at a time.
Which it doesn't. As I pointed out, red oxide is merely a colour and has no other difference. Epoxy primer is what you need. Don't bother with 1k epoxy, it must be two component to be of any use.
Red oxide referred to lead pigments, long since banned, and the term should be too - as above, it is now only a colour.
I'm a huge fan of zinc phosphate corrosion resistant primer, available as an epoxy or non-epoxy, but have never applied it as spray.
Looks like ive got a bit of reading to do. I just like welding bits in my garage and want to move on to a bit of rust protection and paint after. Lechler 29107 it is and some reading over the weekend. Cheers all.
Most zinc oxides and phosphates will run through a gravity hvlp gun with a little thinning, so probably ok in a lvlp gun as well. Big nozzle 1.8 or 2.0 helps
I use a cheap Bergen LVLP gun, 1.4mm tip with a 7cfm compressor for painting Bondarust, a red zinc based alkyd resin primer. It sprays beautifully in summer without thinning, so I think you should have some good options. Bondarust is supposedly non porous and thinned with cellulose thinners.