Brake Pressure Control Valve
WARNING: This page is about a different car, the 2004 Ford Escape, 2003 Ford Escape, and 2002 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
The brake pressure control valve proportions the pressure to the rear brakes. When the brake pedal is applied, brake fluid pressure passes through the brake pressure control valve to the rear brake system until the valve split point is reached. Above its split point, the brake pressure control valve begins to reduce the hydraulic pressure to the rear brakes, creating a balanced braking condition between the front and rear brakes.