Patent ID: 8893676

Claim:
A central valve of a camshaft adjuster of an internal combustion engine, comprising: a valve housing at least partially arranged within a receptacle, which has a wall and is arranged within the camshaft adjuster, the valve housing having at least one inlet connection, one outlet connection and one working connection; a control piston arranged in an axially displaceable manner within the valve housing so that streams of pressure medium to and from the camshaft adjuster can be controlled by positioning the control piston within the valve housing; and a fastening flange, which defines an axial position of the valve housing relative to the camshaft adjuster, fixedly connected to the wall of the receptacle, wherein the fastening flange includes a cylindrical portion with a cylindrical bore and having a first axial end, a second axial end, a collar disposed at the first axial end and an end stop for the control piston disposed at the first axial end, and the valve housing is a separate cylindrical element received in the cylindrical bore.