Weldon Racing A2047 Universal Fuel Pressure Regulator – FPR. Teflon® diaphragm with o-ring seal ensures leak free operation. Flows over 12 GPM. 1/8 NPT Gauge Port. 1/8 NPT manifold pressure reference port. Adjustable between 28 – 120 PSI. 12 pressure and return ports. Billet Aircraft Aluminum with MIL-SPEC anodizing. For use with all Weldon pumps as well as pumps from other manufacturers. These charges are the buyers responsibility.