| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cage valve for high temperature used under high temperature environment and capable of securely sealing a clearance between an inner peripheral face of a cage and an outer peripheral face of a valve plug. <P>SOLUTION: This cage valve is provided with a valve main body 1, the cage 7 having a flow rate control window 13, and a channel 30 on the inner peripheral face of the cage at a position where it slides together with the outer peripheral face of the valve plug. A first seal member 31 usable under high temperature conditions set in an innermost part of the channel and formed by a material having elasticity is fitted, and a second seal member 32 usable under high temperature conditions set on it and formed by a hard material is fitted. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
