Review on NANPU DFR-02 1/4" NPT Air Drying System - Double Air Filters, Air Pressure Regulator Combo - Semi-Auto Drain, Poly Bowl by Steven Ross

I mean, yeah, there's a slow leak from the o-ring at the top of the first filter bowl but that's it. I'm going to try to seal that o-ring better, maybe larger, maybe wrap it or coat it with teflon paste and failing that, I'm going to install a ball valve at the pressure switch to cut air to the unit when not in use. I like the customization that the design allows. I was able to turn the regulator over 180 degrees so the knob faces up and still have the gauge facing out. I was also able to move the mounts to the other side of the assembly and facing upward for mounting to the bracket I made for the side of my compressor. So, it's not completely plug and play and trouble-free, but it works good-nuff and is very configurable.