Amazon.com: Hromee 1/4 Inch Air Compressor Filter Regulator Combo, Water Oil Separator with Pressure Gauge, Manual Drain, Ball Valve and Bracket AW2000-02 : Automotive
NANPU 1/2" NPT Air Dryer System - 5 Micron Particulate Filter, 0.5 Micron Coalescing Filter & Air Pressure Regulator, Water Trap Separator - Semi-Auto Drain,0-150 psi Gauge, Poly Bowl, Metal Bracket: Amazon.com:
DEWALT 3/8 in. NPT Filter Regulator with Lubricator DXCM019-0352 - The Home Depot
1/8" FRL Filter Regulator Lubricator | ATO.com
DEWALT DEWALT 3/8 in. NPT Filter Regulator with Lubricator in the Air Compressor Accessories department at Lowes.com