Technical RFI®

Reverse Fluid Injection (RFI™) is Phoenix System’s patented bleeding technique that allows the user to efficiently remove trapped air from a brake system. Phoenix Systems recommends thoroughly flushing contaminated systems of all old fluid before performing RFI bleeding on brake and ABS systems. The Phoenix brake/clutch bleeders are especially useful in bleeding ABS and Ford Ranger clutches.  Designed for one person to bleed without air or electricity, they are fast and efficient, and most systems can be bled in 10 minutes. 

Reverse Fluid Injection injects fluid at the lowest point of the system, the slave bleeder valve. Working with the law of physics – air rises in fluid – the Phoenix injectors using RFI forces the air through the fluid and out the master cylinder using less than 10 psi.  RFI utilizes fluid pats in which enhanced braking mechanisms offer almost no resistance, which makes it ideal for ABS systems.  Metering valves, proportioning valves, and anti-lock valving are designed to manipulate braking pressure, while providing minimal resistance to fluid as it returns to the master cylinder following the release of braking pressure.