1/2" Heavy Duty Pressure Regulator / Particulate Filter Water Trap w/ Auto Drain 1/2" Air Pressure Regulator / Particulate Filter Combination with Automatic Drain 140 CFM flow rate 215 PSI Max Output pressure Internal Float Drain connection is 1/8" Male NPT pretruding from the bottom of the metal bowl. Regulator will adjust pressure between 7 - 215 psi Rated for High Pressure and Low Pressure Compressed air applications 250 PSI Max