i do not use this for paint so if that is your use you can skip this review.I purchased it to use as a pressure chamber for casting urethane resin.The construction seems very good and sturdy the listing showed it as being rated for 30 psi but my tank is stamped .4 MPA which is 58.01 PSI and, that is what the pop-off is set at.The fittings on my unit were all metric so, I had to replace them with suitablepipe thread fittings from Menards. You can find many Youtube videos on how to perform this.