| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vacuum valve structure which allows for easy attachment of an opening/closing detection sensor. <P>SOLUTION: A vacuum valve structure comprises a connection pipe 12 which has an internal valve seat 15 and is connected midway of a vacuum sewer pipe 4, and a valve driving part 14 which supports a valve body 16 such that the valve body 16 can be contacted with or detached from the valve seat 15. The valve driving part 14 includes an opening/closing detection sensor 26a on the outer peripheral surface of a main casing 18 thereof, capable of detecting the opening/closing state of the valve seat 15. The main casing 18 of the valve driving part 14 is provided with a sensor attachment position indicating portion 41 which indicates the attachment position of the opening/closing detection sensor 26a. <P>COPYRIGHT: (C)2012,JPO&INPIT |
