PORTER-CABLE Porter-cable Regulator with-Gauge 1/4 In. Npt in the Air Compressor Accessories department at Lowes.com
Porter Cable Air Compressor Replacement 4 Port Regulator # D27254 - Walmart.com
Amazon.com: N008792 Air Compressor Regulator Repair kit, Compatible With Craftsman/Dewalt/Porter Cable Air Compressor Regulator for 1WC94 1WC95 D55155 D55168 Regulator Repair Kit - With The Lube : Tools & Home Improvement