MettleAir AW5000-N06-1PKD Automatic Drain Air Filter/Regulator with Gauge/Bracket, 5500 L/minute, 3/4" NPT Model: AW5000-06D Ports: 3/4" NPT Gauge Port: 1/4" NPT Rated Flow: 5500/L min (194.23 SCFM) Bowl Material: Polycarbonate with Metal Cover