Control valve

A control valve comprising:

• a casing in which a flow inlet through which a fluid flows in from an outside and a flow outlet through which the fluid flows out to the outside are formed;
• and
• a rotor including
• a shaft portion located on a first side in an axial direction and rotatably supported by the casing, and
• a valve body having an outer diameter that gradually increases toward a second side in the axial direction from the shaft portion and forming an internal space that is open toward the second side in the axial direction,
• wherein the rotor switches between communication and shut-off between the internal space and at least one of the flow inlet and the flow outlet, through a communication port formed in the valve body, in accordance with a rotation position of the rotor, in a state in which an outer peripheral surface of the valve body is supported to be slidable on a support surface formed on the casing, and
• a first biasing member configured to bias the rotor toward the first side in the axial direction is provided inside the rotor.