| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the pressure of a primary chamber without causing strength reduction of a valve structure member constituting the primary chamber. <P>SOLUTION: The pressure reducing valve is equipped with a primary chamber 11, a secondary chamber 12 possible to connect with the primary chamber 11 via a valve port 16, and a valve element 27 possible to move in order to change opening of the valve port 16, in which the valve structure member 10 constituting the primary chamber 11 is made of synthetic resin. The pressure reducing valve includes a relief valve 35, wherein in the valve-closed state where the valve element 27 blocks the valve port 16, when the pressure in the primary chamber 11 increases within a limit of not exceeding the resisting pressure of the valve structure member 10, the relief valve allows fluid inside the primary chamber 11 to flow into the secondary chamber 12 through a connecting passage 30 penetrating the valve element 27, and, however, normally holds the connecting passage route 30 in the closed condition. <P>COPYRIGHT: (C)2011,JPO&INPIT |
