| 摘要 |
PROBLEM TO BE SOLVED: To smoothly perform switching between a close state and an open state of an overflow preventing valve while satisfactorily performing a reset operation of the overflow preventing valve.SOLUTION: A reset means R is made up of: a support member H1 that extends in a gas flow direction of a gas flow passage 1 and is secured to a gas cock body 2; a cylindrical slide member R1 being slide-movable along the support member H1; and a contact member R2 that is disposed on an inner peripheral side of the slide member R1 and is brought into contact with an inner peripheral surface of the slide member R1 so as to perform a reset operation. The inner peripheral surface is brought into contact with the contact member R2 with movement of the slide valve G between a close position and an open position. |
