Valve device for a compressed air system of a trailer of a commercial vehicle

The valve device has a trailer brake valve for brake assembly and a trailer associated valve such as level control valve or lifting axle valve for an air suspension system. The trailer associated valve of air suspension system is integrated into device main housing. An electronic control unit (72) such as anti-lock braking system (ABS) or electronic braking system (EBS) is provided to actuate both the valves of air suspension system and brake assembly. An independent claim is included for compressed air system of trailer of commercial vehicle.