sounds like the compressor that i have. it was designed as a paint sprayer without a tank, is will pump about 80 psi but low volumn of air. there is a relief valve that releases the pressure when the sprayer of other attachment is not allowing the air to escape, makes a pop pop popp ing sound when the valve opens and closesi would assume it would work with the hvlp gun, but not sure. i use mine for running a 16 and 18 gauge nailers.