To provide a cryogenic valve specifically designed so that it can be operated in a cryogenic environment.
The cryogenic valve comprises a body 1 having an opening 11 inside, a hood 2 coupled with the body 1, a disk 3 for opening and closing the opening 11 while being moved between the opening 11 and the hood 2 inside the body 1, a stem 4 connected to the disk 3 and penetrated into the hood 2, and a driving part for controlling a fluid passing through the body 1 by actuating the disk 3 and the stem 4, wherein a first seat 12 is included at an abutting part between the disk 3 and the opening 11 and a second seat 13 is included at an abutting part between the disk 3 and the hood 2, thereby allowing exchange operation of a packing 22 in system operation since airtight is retained so as to prevent the fluid from flowing into the hood 2 not only when the disk 3 is lowered downward to close a valve but also when the disk 3 is raised upward to fully open the valve.
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Masayoshi Yoshida
Hiromitsu Imaeda
Umemura Hiroaki