Hydraulic valve for cam phaser

A hydraulic valve for a cam phaser, the hydraulic valve comprising:

• a housing;
• a hollow cylindrical piston that is axially movable in a central opening of the housing that extends along a longitudinal axis of the housing and that includes shoulders;
• a supply connection configured to feed a hydraulic fluid;
• a first operating connection;
• a second operating connection;
• a tank connection,
• wherein one of the first operating connection and the second operating connection is connectable with the supply connection and another of the first operating connection and the second operating connection is connectable with the tank connection as a function of an axial position of the hollow cylindrical piston,
• wherein the hollow cylindrical piston includes a feed channel configured to connect with the supply connection and a drain channel configured to connect with the tank connection,
• wherein a divider wall is configured between the supply connection and the tank connection,
• wherein the divider wall encloses an angle of less than 90° with the longitudinal axis,
• wherein the hollow cylindrical piston includes a first flow through opening configured to connect the first operating connection or the second operating connection with the drain channel and a second flow through opening configured to connect the feed channel with at least one of the first operating connection and the second operating connection,
• wherein the divider wall includes an overflow opening configured to provide a flow connection of the feed channel and the drain channel.