VALVE ARRANGEMENT FOR CONTROLLING AN AIR SUSPENSION, A VALVE UNIT, AND A VEHICLE PROVIDED WITH SUCH DEVICES

Valve arrangement for multi-axle vehicles having air suspension, which vehicle is provided with at least one axle (1, 2, 3) having two or more air suspension elements (4,5, 6,7, 8, 9, 30) which can be pressurized by means of a source of compressed air (10), valves (13,14,15,16,17,18) for pressurizing or venting said air suspension elements, and a control unit (25) for controlling opening and closing of said valves. A valve unit can also be provided for each air suspension element, which valve unit comprises a first valve (15a, 16a, 44) between the source of compressed air (10) and the air suspension element (4, 5,6,7,8, 9, 30), for pressurizing said air suspension element, and a second valve (15b, 16b, 49) connected between the first valve and the air suspension element, for venting said air suspension element, which valves are normally closed. The invention further relates to a valve unit for said valve arrangement and a vehicle provided with such a valve arrangement.