Injection molded plastic valve assembly for a motor vehicle

A valve assembly for controlling cooling fluid flows in a motor vehicle, the valve assembly comprising:

• a valve housing having a main housing body and a housing cover permanently connected to the main housing body, a valve body receiving space being developed in the valve housing, which is enclosed by the main housing body and the housing cover,
• a fluid line system having at least two fluid lines, which run in different spatial regions starting from the valve body receiving space,
• a valve body tapering along an actuation axis, which is accommodated in the valve body receiving space rotatable about the actuation axis in such a way that by rotating the valve body about the actuation axis, a fluid connection situation of at least two fluid lines of the fluid line system is changeable, and
• a prestressing means, which applies a pressure onto the valve body along the actuation axis in a tapering direction, wherein the prestressing means is a compression spring,
• wherein both the valve body as well as at least the main housing body are formed as injection molded parts from thermoplastic,
• wherein the valve body has a plurality of flow-through volumes and/or a plurality of flow-through openings in its outer surface, each flow-through volume and/or each flow-through opening being surrounded by at least one fluid sealing rib protruding in one piece from an outer side of the valve body and running along the outer side of the valve body and at least partially transverse to the actuation axis, wherein the prestressing means is made of metal and the prestressing means is the only metallic component in the valve housing.