| 摘要 |
PROBLEM TO BE SOLVED: To prevent malfunction of a safety valve for hydrate during its closing.SOLUTION: In a using state in which an inlet 4 of a body 3 communicates with the inside of a hydrate reservoir, at least a valve body 2 of a part exposed to the atmosphere is provided with a plurality of fins 16 exchanging heat with the atmosphere. During closing of a valve, heat taken by the fins 16 from the atmosphere is allowed to transfer to a valve body 2 and a seal face 7 of a valve seat 1. |
