Hydraulic pressure control system for split brake system

A hydraulic pressure control system for a split brake system comprising:

• a tandem master cylinder;
• first and second wheel brakes;
• a first braking line between one of said tandem master cylinders and said first wheel brake;
• a second braking line between the other of said tandem master cylinders and said second wheel brake;
• an anti-skid actuator positioned within said first braking line to thereby decrease and increase braking fluid pressure transmitted to said first wheel brake in response to rotational conditions of wheels, and
• a control valve assembly positioned downstream of said anti-skid actuator communicating with said first braking line between said anti-skid actuator and said first wheel brake at a first side thereof, and communicating with said second braking line at a second side thereof, said control valve assembly comprising normally open valve means interrupting said second braking line when fluid pressure within said first braking line attains a predetermined value, and balance piston means being balanced by means of fluid pressures transmitted to said first and second wheel brakes, respectively, to thereby maintain said fluid pressures of said first and second wheel brakes at the same magnitude.