| 摘要 |
PROBLEM TO BE SOLVED: To provide a spring energized check valve adjusting a flow rate flowing down to an outlet from an inlet through the communication hole of a valve element. SOLUTION: An inlet 1 and an outlet 3 are formed by a valve casing comprising an inlet member 2 and an outlet member 4. An annular valve seat 5 is provided between the inlet 1 and the outlet 3, and the valve element 6 is disposed on the outlet 3 side of the annular valve seat 5 in such a manner that the same is energized by a spring and is freely seated on and separated from a seat. A communication hole 12 providing communication to the inlet 1 and the outlet 3 is provided in the valve element 6 energized by the spring, and an auxiliary valve element 7 is disposed oppositely to the communication hole 12 in such a manner that the same can be freely seated on and separated from the seat. An auxiliary energizing spring 14 energizing the auxiliary valve element 7 to the communication hole 12 side of the valve element 6 is disposed. A flow rate adjusting member 15 including a plurality of small communication holes 17a, 17b, 17c, and attached to the valve element 6 with desired numbers of small communication holes oppose to the communication hole 12 is provided. COPYRIGHT: (C)2010,JPO&INPIT
|
