Vacuum Regulator, 0 to 30" Hg, 2 cfm Max Capacity: Amazon.com: Industrial & Scientific
3/4″ General Purpose Pressure Regulator | Proportion-Air
Amazon.com: 1" HEAVY DUTY HIGH FLOW IN-LINE COMPRESSED AIR PRESSURE REGULATOR 180 CFM : Industrial & Scientific
Heavy Duty in-LINE Compressed AIR Pressure Regulator for AIR Compressor, 7 to 215 PSI Adjustable, HIGH Flow Rate, Wall Bracket and Gauge Included (1/2" NPT, 130 CFM) - Amazon.com
Milton® 1/2" High-Pressure Air Regulator - TP Tools & Equipment
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