To provide a flow regulating valve for high temperature fluid to meet the need for control of fluid under high temperature environment in recent years.

A casing 1 is formed cylindrical to have a flow hole 19, so that fluid flows through the flow hole 19. Inside the casing 1, a valve element 2 and a body 3 are installed, so that flow of the fluid is regulated by the valve element 2. The valve element 2 comprises a valve 20 and a rotation shaft 21 which are integrally formed, so that flow is regulated by the valve 20 rotating in the flow hole 39. The rotation shaft 21 is formed on one end side and the other end side of the valve 20 to be rotatably journaled by the body 3. The rotation shaft 21 on one end side penetrates the body 3 through a through hole 15 to be extended out of the casing 1 to be connected to a prescribed actuator or the like. The body 3 is separable in half in a vertical direction as an upper body 30 and a lower body 31, and they are journaled to hold the rotation shafts 21 and 21' from the upper side and the underside.