| 摘要 |
PURPOSE: A sealing structure of a valve seat and a disk is provided to stably perform an opening and closing function even if a packing is melted. CONSTITUTION: A sealing structure of a valve seat and a disk comprises a bonnet(20), a valve seat, and a disk(30). The bonnet is installed in a moving instrument installation unit(12) of a valve body(10). A disk is arranged in the valve seat. A packing mounting groove(32) is formed in the edge of the disk. A synthetic resin packing(70) is installed in the packing mounting groove and performs an opening and closing function. A sealing surface(36) is formed in the outer surface of the disk and is adhered to the valve seat. |
