3/4" NPT HEAVY DUTY Industrial Grade Filter Regulator Coalescing Desiccant Dryer System For Compressed Air Lines, Metal Bowls, Great For Paint Spray And Plasma Cutter (AUTO DRAIN) - Amazon.com
ARO 2000 Series 3/4 in. 3-Piece Combination Filter Regulator + Lubricator w/ Metal Bowl & Manual Drain - John M. Ellsworth Co. Inc.
Three Stage Air Drying System SAU430-N06, 3/4" NPT, PneumaticPlus SAU Series
3/4" HIGH FLOW Air Pressure Regulator & Filter Water Trap & AUTO DRAIN | eBay
ARO 3/4 in. NPT 2000 Series Combination Air Compressor Filter and Regulator, Piggyback, Manual Drain at Tractor Supply Co.