| 摘要 |
<p>PURPOSE: To provide a valve system capable of adjusting a distance of a clearance so as to simultaneously open and close a valve by a first valve body and a valve seat and a valve by a second valve body and a valve seat on the valve apparatus on which the first valve body and the second valve body are arranged on the same prod and the valve seats are arranged on their respective valve bodies correspondingly. CONSTITUTION: A position of at least one of valve seats is made free to move in the axial direction. Otherwise, a prod 5 is split and formed, and a distance between valve bodies from each other is made free to adjust.</p> |
