| Shipping | Tax | Terms Shopping Cart 0 Items Request for Quote 0 Items All Categories > Clean Air Treatment > Regulators > Wilkerson Regulators > Wilkerson R21 Regulators > View Items Download PDF Download PDF Printable Page Email This Page Save To Favorites Please wait… Wilkerson R21 Regulators Check up to five results to perform an action. larger image Standard FeaturesBalanced Valve DesignNon-Rising Pressure Adjusting DialHigh-Relief Flow (3/16" Relief Orifice)Two 1/4" Gauge PortsPiston Operated Results Per Page : 25 50 100 200 Results 1 - 12 of 12 1 Item # Capacity Thread Size Thread Type Adjustable Pressure Maximum Inlet Pressure Web Price Shipping Weight R21-02-000 117 ft³/min 1/4" National Pipe Thread (NPT) 5 to 160 psig 300 psig $265.10 2.3 Pound R21-03-000 180 ft³/min 3/8" National Pipe Thread (NPT) 5 to 160 psig 300 psig $265.10 2.3 Pound R21-04-000 195 ft³/min 1/2" National Pipe Thread (NPT) 5 to 160 psig 300 psig $265.10 2.3 Pound R21-06-000 220 ft³/min 3/4" National Pipe Thread (NPT) 5 to 160 psig 300 psig $265.10 2.3 Pound R21-02-L00 117 ft³/min 1/4" National Pipe Thread (NPT) 2 to 40 psig 300 psig $265.10 2.3 Pound R21-03-L00 180 ft³/min 3/8" National Pipe Thread (NPT) 2 to 40 psig 300 psig $265.10 2.3 Pound R21-04-L00 195 ft³/min 1/2" National Pipe Thread (NPT) 2 to 40 psig 300 psig $265.10 2.3 Pound R21-06-L00 220 ft³/min 3/4" National Pipe Thread (NPT) 2 to 40 psig 300 psig $265.10 2.3 Pound R21-02-R00 117 ft³/min 1/4" National Pipe Thread (NPT) 5 to 160 psig 300 psig $285.05 2.3 Pound R21-03-R00 180 ft³/min 3/8" National Pipe Thread (NPT) 5 to 160 psig 300 psig $285.05 2.3 Pound R21-04-R00 195 ft³/min 1/2" National Pipe Thread (NPT) 5 to 160 psig 300 psig $285.05 2.3 Pound R21-06-R00 N/A 3/4" National Pipe Thread (NPT) 5 to 160 psig 300 psig $285.05 2.3 Pound Results 1 - 12 of 12 1 Maintain Your Air Compressor Learn more about maintaining your air compressor by downloading our eBook on air compressor maintenance. Download eBook