Control valve

A control valve comprising:

• a casing having an outflow port which is open in a first direction and in which an outflow opening for a fluid is formed;
• a joint that is joined to an opening end surface of the outflow opening in the outflow port;
• a rotor that is rotatably accommodated inside the casing and has a communication opening formed to be able to communicate with the outflow opening;
• a slide ring that has a slide surface for sliding on an outer circumferential surface of the rotor while being accommodated inside the outflow port and communicates the outflow opening and the communication opening in accordance with a rotational position of the rotor;
• a spring that is interposed between the joint and the slide ring and biasing the slide ring toward the rotor;
• a sealing ring that is interposed between an inner circumferential surface of the outflow port and an outer circumferential surface of the slide ring;
• and
• a holder that is disposed between the inner circumferential surface of the outflow port and the outer circumferential surface of the slide ring and holds the sealing ring from an opposite side of the rotor in the first direction with respect to the sealing ring,
• wherein the holder is disposed to be separated from at least any of the joint and the outflow port,
• wherein the holder includes
• a holder tube portion which surrounds the periphery of the slide ring, and
• a holder flange portion which bulges outward from the holder tube portion, and
• wherein the outflow port has a first regulation portion which comes into contact with the holder flange portion in the first direction and regulates movement of the holder to the rotor side in the first direction with respect to the casing.