Rotary valve with encoder on rotor

The rotary valve comprising:

• a stator member with a stator face, the stator member having at least two stator channels for conducting a fluid and opening into the stator face;
• a rotor member comprising a cylindrical body and with a rotor face facing and in contact with the stator face, the rotor member having a rotor channel in the rotor face, wherein the rotor member is rotatable with respect to the stator member about a rotation axis, such that in a conducting position, the rotor channel interconnects the at least two stator channels to be in fluid communication;
• a rotary encoder assembly adapted for determining a rotary position of the rotor member, the rotary encoder assembly comprising an encoder member and an encoder module, which is adapted to sense a rotary position of the encoder member;
• a housing for accommodating the rotor member and the stator member;
• a rotary bearing for mounting the rotor member in the housing;
• wherein the encoder member is arranged adjacent to the bearing;
• wherein the encoder member is rigidly connected to the rotor member and surrounds the rotor member,
• wherein the cylindrical body comprises an opening for receiving a shaft of the rotary valve,
• wherein the encoder member surrounds the opening for receiving the shaft;
• and
• further comprising:
• a controller that controls the motor to generate torque and controls a position of the rotor member in closed loop by comparing a position determined by the rotary encoder assembly of the rotor member with a desired position and by stopping the motor, when the desired position is reached.