| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a core which can reliably intercept a flow path with a valve body without producing an aperture between a valve body and a core, and a fluid pipe and without injuring the valve body. <P>SOLUTION: The valve body 5, which is fitted into a boring Q formed by perforating the fluid pipe 1 in a case 2 of the fluid pipe 1 having an air-tightly covered outer circumference, moves in the case 2 and in the fluid pipe 1, and intercepts or opens the flow path, is inserted into the inside of the core 40. The core 40 includes: a support member 41 which has an inner circumferential surface of the boring Q, an outer circumferential surface along the inner circumferential surface of the fluid pipe 1, and an inner circumferential surface 41d brought into contact with the valve body 5 when the valve body 5 intercepts the flow path; and an elastic member 42 which is disposed on the outer circumferential surface of the support member 41 and comes into contact with the inner circumferential surface of the boring Q and further with the inner circumferential surface of the fluid pipe 1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
