Control valve for a device for variably adjusting the control times of gas-exchange valves of an internal combustion engine

A control valve for a device variably adjusting control times of gas-exchange valves of an internal combustion engine, comprising:

• a valve housing having an axial cavity;
• a control piston arranged within the valve housing;
• a dividing element arranged in the cavity separating the cavity into two partial spaces, a first partial space and a second partial space, and hydraulically sealing the partial spaces from one another, the dividing element being produced separately from the valve housing and being positionally fixedly fastened in the cavity of the valve housing, the first partial space holding the control piston, a supply connection being formed in a region of the first partial space, and the second partial space having at least one first opening via which a pressure medium can be supplied to the second partial space by a pressure medium pump and at least one second opening, by means of which the second partial space communicates with the supply connection;
• an annular filter arranged in the second partial space;
• and
• a non-return valve arranged radially within the annular filter.