RESIDUAL PRESSURE VALVE, 2 LBS, REQUIRED FOR USE IN SOME POWER BRAKE CONVERSIONS, 3/16 INCH LINE FITTINGS, Residual valves are used to maintain constant pressure on the brake system,  For drum brakes, a 10 lb. residual valve is used to hold pressure against the springs in the drum,  This allows the drum brake to engage more quickly and reduces pedal travel,  For an under-the-floor master cylinder brake system, a 2 lb. residual valve is used for disc brakes to keep brake fluid from flowing back down into the master cylinder
Vehicle Applications
1966-1996 BRONCO
1967-1973 COUGAR
1965-1973 MUSTANG
