The Radium Engineering MPR-RA is the rotating-assembly version of the Multi-Port Regulator, adding tool-less knob pressure adjustment and a 360-degree swiveling, double o-ring sealed vacuum reference port. Finished in black, it supports multi-pump and high-output fuel systems.
Ports A & B are -6AN ORB and port E is -8AN ORB for high-pressure fuel, while two lower opposing -6AN ORB return ports flow parallel. The 1:1 design flows over 1,400 lph with interchangeable orifices for stable, flutter-resistant pressure.
| Brand | Radium Engineering |
| Series | MPR-RA (Rotating Assembly) |
| Type | Vacuum-referenced fuel pressure regulator |
| Pressure Ports | 2x -6AN ORB (A/B) + 1x -8AN ORB (E) |
| Return Ports | 2x -6AN ORB |
| Adjustment | Tool-less knob |
| Vacuum Port | 360-degree swivel, double o-ring sealed |
| Flow | 1,400+ lph |
| Ratio | 1:1 vacuum reference |
| Finish | Black |
