Abstract: A butterfly valve for controlling the flow of high temperature fluids, particularly hot gases, comprises a fluid cooled disc, fluid cooled shafts and a fluid cooled body. The coolant fluid is preferably water. The disc includes a plurality of baffle strips positioned within a hollow interior defining a continuous, serpentine-like coolant flow passageway across the disc for uniform cooling thereof. An outer peripheral edge of the disc carries a resilient high-temperature sealing strip, preferably of a braided Inconel material, for improved gas sealing. The shafts which rotatably mount the disc within the body are hollow and are also cooled by the coolant fluid which is supplied to the disc. The valve body includes a fluid cooling jacket formed adjacent an inner sidewall which forms a seal with the disc along a circumferential surface portion thereof.