A vehicular braking system is controlled by a valve assembly including first and second valve elements movable in first and second valve housings, from a first position to a second position to apply fluid pressure respectively to first and second brake circuits of the vehicle. The first valve element is movable from the first position to the second position by user input via a brake control, e.g. a foot brake pedal, and by an actuator assembly responsive to an electrical control signal from an electronic controller. An abutment surface of the first valve element abuts a corresponding abutment surface of the second valve element to move the second valve element from the first position to the second position as the first valve element moves from the first position to the second position.

Pneumatic control valve of a vehicle air brake system, having at least one first valve system which is arranged in a housing upper part with a first valve piston which can be actuated via an elastomer spring element, and having a second valve system which is arranged in a housing lower part with a coaxially arranged second valve piston which can be actuated by the first valve system and with a second annular plate valve. The elastomer spring element and the first valve piston are configured in one piece as a composite component. In the region of a radial sealing lip of the spring element, the material of the elastomer spring element engages radially and axially in a positively locking manner around a radially outer section of the first valve piston.

Pneumatic control valve of a compressed-air brake system of a vehicle, having at least one first valve system which is arranged in an upper housing and has a first valve piston which interacts with a first valve and can be actuated manually or by means of an actuator via a spring element by means of a plunger piston, having a second valve system which is arranged in a lower housing with a coaxially arranged second valve piston which can be actuated pneumatically and/or mechanically by the first valve system and with a second annular plate valve. The first valve piston is guided via the plunger piston in the cylindrical guide in the housing upper part.