Radium: DFPR, Dual Fuel Pressure Regulator

Radium: DFPR, Dual Fuel Pressure Regulator

OVERVIEW
The Dual Fuel Pressure Regulator (DFPR) simultaneously isolates 2 separate fuel systems.

This can be very advantageous in the following scenarios:
Modern engines that use both direct injection and port injection.
Modern venturi transfer systems that are incompatible with fuel surge tanks.

MOUNTING
As shown below, an anodized aluminum bracket and M6x1mm hardware are provided. The flat head stainless steel screws permit the DFPR to be flush mounted to a flat surface. Reference the dimensions below to confirm fitment in the vehicle.





PLUMBING
The DFPR is designed to be plumbed upstream (before) the HPFP and port injection fuel rail(s).



FUEL PRESSURE ADJUSTMENT
RA-series regulators feature the first tool-less pressure adjustment. A jam nut and set screw are no longer required. With a simple turn of the knob, pressure will be increased or decreased. Additionally, there are no inherent air (vacuum/boost) leaks through the threads that traditionally a smoke detector would pick up.

To aid in adjusting pressure, there are incremental detents that provide haptic feedback to the user. Every detent permits 1psi (+/-0.5psi) of adjustment depending on current fuel pressure.

NOTE: FPR2 pressure will always be equal to or less than FPR1 pressure. It cannot physically be higher.

FUEL PRESSURE STABILITY
With years of track and bench testing data, the RA-series regulators have been refined to optimize pressure management. A newly designed single stainless steel return orifice generates laminar flow that enhances stability control.

Minimum Pressure: 18.5psi (1.3bar)
Maximum Pressure: *N/A

*This is rhetorical. The maximum pressure is dependent on the relief valve inside the pump or the maximum current the fuel pump controller allows.

Stock Images Used. Actual Product May Vary.