Hydraulic brake system with slip control

A hydraulic brake control system with slip control, comprising:

• a braking pressure generator which is hydraulically connected to at least one wheel brake by way of a main pressure line,
• a return line connected to the wheel brake and to a pressure-fluid collecting means,
• an auxiliary-pressure pump having an auxiliary-pressure line and being hydraulically connected to the braking pressure generator, and
• inlet and outlet valves inserted into the main pressure line and the return line, said inlet valve including a valve carrier having a first fluid passage connected to the wheel brake, a second fluid passage connected to the braking pressure generator, and a valve closure member for selectively preventing communication between the first and second fluid passages,
• a controllable restrictor connected to the main pressure line, said restrictor adopting predetermined operating positions as a function of a defined hydraulic pressure difference between the wheel brake and the braking pressure generator, said restrictor permitting an unhindered hydraulic fluid flow in the main pressure line to the wheel brake in a first operating position, while limiting the pressure fluid flow to the wheel brake in a second operating position, and
• said restrictor being arranged on a piston in said inlet valve wherein said piston is guided by at least a portion of said valve carrier for selectively restricting flow through the first fluid passage to the wheel brake.