1/4 in, NPT, Compressed Air Regulator - 39DK93|019-0315E - Grainger
Parker 1/4 NPT Port, 15 CFM, Zinc Miniature Regulator 2 to 125 psi Range [OF27 | eBay
3/4" HEAVY DUTY HIGH FLOW IN-LINE COMPRESSED AIR PRESSURE REGULATOR 180 CFM | eBay
SPEEDAIRE 4ZM09 Air Regulator,3/4 In NPT,440 cfm,300 psi - Newegg.com
Air Regulator Miniature -1/4" NPT - 21 CFM – GROZ USA
Industrial Gold Filter Regulator Combination | Regulators | Compressor World
C-Aire FR REG25CFM 25 CFM 1/4" Regulator
HEAVY DUTY IN-LINE COMPRESSED AIR PRESSURE REGULATOR FOR AIR COMPRESSOR, 7 TO 215 PSI ADJUSTABLE, HIGH FLOW RATE, WALL BRACKET AND GAUGE INCLUDED (3/4" NPT, 140 CFM) - Amazon.com