Valve assembly comprising an internal flow channel with an open longitudinal section

A valve arrangement, comprising a plurality of valve units, which on opposite sides thereof respectively have a mounting face and which with the formation of a subassembly are arranged in an array direction one after the other and thereby are mounted side by side with mounting faces thereof facing each other, each valve unit possessing two internal flow ducts running athwart the array direction and designed in the form of power ducts, such ducts extending from a valve means of the respective valve unit to one and the same outer face, aligned athwart the array direction of the valve unit, where connection means for the connection of a fluid duct leading to other equipment are provided, characterized in that the two internal flow ducts are delimited at their first longitudinal side, facing the first mounting face, by a respective lateral duct wall of the respective valve unit and at their second longitudinal side, facing the other second mounting side, are open along a length section extending at least along a part of their length, and the open length sections have a sharply bent or arcuate shape in the length direction thereof and are covered by the lateral wall of the neighboring valve unit mounted on the second mounting side.