HIGH TEMPERATURE VALVE

PROBLEM TO BE SOLVED: To seal a fluid surely by separating an annular space formed between an inner cylinder and an outer cylinder into an upstream side and a downstream side, and reduce stress generated on a partitioning structure part so as to extend the life of the partition structure part, in thermal expansion of the diameter direction and the axial direction of the inner and the outer cylinders. SOLUTION: A high temperature valve consists of a valve cage 5 formed in a double structure by an inner cylinder 3 and an outer cylinder 4, and a valve element 6 arranged in the inner cylinder 3. A first partitioning means 11 for partitioning an upstream side and a downstream side is arranged between the inner cylinder 3 and the outer cylinder 4, and it is formed in such a constitution that a first bellows 14 which is expandably and contractibly in the diameter direction A of the inner and outer cylinders 3, 4, and a second bellows 15 which is expandably and contractibly in an axial direction B, are joined with each other through an intermediate ring 16, and they are connected to the outer peripheral side of the inner cylinder 3 and the inner circumferential side of the outer cylinder 4.