| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a valve easily renewable to a new valve from an existing valve by dispensing with complicated work such as installing a pipe coupling having a loose flange to a water supply pipe by cutting the water supply pipe. SOLUTION: The loose flange 6 is fitted around a shaft directional one end part of a cylindrical valve casing 3 so as to be capable of advancing and retreating in the axis C1 direction by holding airtightness by a seal ring 7 composed of an elastic material such as rubber. The loose flange 6 is installed on the cylindrical valve casing 3 so as to be capable of adjusting a projection quantity 1 from a shaft directional end surface 3A of the cylindrical valve casing 3 by a plurality of position adjusting bolts 8 having a stud bolt 8A having the axis parallel to the axis C1 of the cylindrical valve casing 3, and embedded in and fixed to the cylindrical valve casing 3, an adjusting nut 8B threadedly engaged with this stud bolt 8A, and a fastening nut 8C.</p> |
