PneumaticPlus SAU3000M-N03DG 3 Unit Combo Compressed Air Filter Regulator Lubricator, 3/8" Pipe Size, NPT-Auto Drain, Poly Bowl with Gauge. 3/8" National pipe thread taper modular FRL unit. Max supply pressure: 250 PSI, max operating pressure: 150 PSI. 72 SCFM, 10 micron element standard. Auto drain and polycarbonate bowl.