Exhaust valve and method for manufacturing same

An exhaust valve comprising:

• a pipe body connecting an upstream pipe and a downstream pipe for exhaust;
• a valve plate disposed inside the pipe body in a state of being attached to a rotary shaft that rotates by drive of an actuator, the valve plate configured to rotate to open/close an exhaust flow path inside the pipe body;
• and
• a stopper fixed inside the pipe body, wherein
• the stopper is a member including, formed integrally, a base portion including an insertion hole configured to receive insertion of the rotary shaft, a first contact portion extending along an inner peripheral surface of the pipe body on one side of the base portion upstream and downstream of the exhaust, and a second contact portion extending along the inner peripheral side of the pipe body on another side of the base portion upstream and downstream of the exhaust, on a side opposite to the first contact portion, and
• the valve plate comes into contact with the first contact portion and the second contact portion at a position at which the valve plate closes the exhaust flow path,
• wherein the stopper is an integral member comprising the base portion, the first contact portion and the second contact portion,
• the insertion hole of the base portion is located at a substantial center of the base portion such that the insertion hole is entirely surrounded by the base portion.