Vehicle for a thick material pump device, wherein the vehicle comprises: - at least two support devices (16, 17) for supporting and/or aligning the vehicle, - a mast arrangement which is rotatable and has several independently movable partial mast members, - a hydraulic drive arrangement for the support devices (16, 17) and the mast arrangement, which has hydraulic drives for moving the support devices and the movable partial mast members, - a valve arrangement for moving one of the support devices (16, 17) and/or one of the partial mast members by means of the hydraulic drive arrangement and its hydraulic drives, wherein - the valve arrangement has a group of proportional valves for controlling the hydraulic drive arrangement, - the valve arrangement has a group of switchover valve devices which are each connected to at least one hydraulic drive of the support devices (16, 17) or of the partial mast members, - the switchover valve devices are connected downstream of the proportional valves, - exactly one switchover valve device or several switchover valve devices are supplied by exactly one proportional valve or are connected downstream of exactly one single proportional valve, - outputs of the proportional valves lead exclusively to inputs of the switchover valve devices, - each of the switchover valve devices has between two and five outputs (Al, Ar, M), each output leading to one of the hydraulic drives of the support devices (16, 17) or the mast arrangement, characterized in that - in each switchover valve device, exactly two outputs (Al, Ar) lead to the hydraulic drives of the support devices (16, 17) and exactly one output leads to the hydraulic drives of the mast arrangement, - the multiple outputs (Al, Ar, M) on each switchover valve device are arranged in a row, - the outputs (Al, Ar) at the beginning of the row and at the end of the row lead to one of the hydraulic drives of the support devices (16, 17), - a middle output of the row leads to one of the hydraulic drives of the mast arrangement. - at least two support devices (16, 17) for supporting and/or aligning the vehicle, - a mast arrangement which is rotatable and has several independently movable partial mast members, - a hydraulic drive arrangement for the support devices (16, 17) and the mast arrangement, which has hydraulic drives for moving the support devices and the movable partial mast members, - a valve arrangement for moving one of the support devices (16, 17) and/or one of the partial mast members by means of the hydraulic drive arrangement and its hydraulic drives, wherein - the valve arrangement has a group of proportional valves for controlling the hydraulic drive arrangement, - the valve arrangement has a group of switchover valve devices which are each connected to at least one hydraulic drive of the support devices (16, 17) or of the partial mast members, - the switchover valve devices are connected downstream of the proportional valves, - exactly one switchover valve device or several switchover valve devices are supplied by exactly one proportional valve or are connected downstream of exactly one single proportional valve, - outputs of the proportional valves lead exclusively to inputs of the switchover valve devices, - each of the switchover valve devices has between two and five outputs (Al, Ar, M), each output leading to one of the hydraulic drives of the support devices (16, 17) or the mast arrangement, characterized in that - in each switchover valve device, exactly two outputs (Al, Ar) lead to the hydraulic drives of the support devices (16, 17) and exactly one output leads to the hydraulic drives of the mast arrangement, - the multiple outputs (Al, Ar, M) on each switchover valve device are arranged in a row, - the outputs (Al, Ar) at the beginning of the row and at the end of the row lead to one of the hydraulic drives of the support devices (16, 17), - a middle output of the row leads to one of the hydraulic drives of the mast arrangement.