| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure reducing valve capable of suppressing gas leakage from a primary port to a secondary port.SOLUTION: A pressure reducing valve 10 includes an open/close valve 19 which opens and closes communication between a primary port and a secondary port provided on a main body member 11, and a piston 16 which divides a cylinder 114 into a pressure reducing chamber 92 and a pressure regulating chamber 91 and opens and closes the open/close valve 19 by sliding inside the cylinder 114 in accordance with a difference between a force exerted from the pressure regulating chamber 91 side and a force exerted from the pressure reducing chamber 92 side. The open/close valve 19 includes a valve system 15 located to face the piston 16, and a valve seat fixing member 14 which accommodates the valve system 15 and limits displacement of the piston 16 toward an upstream side of the open/close valve 19 by being brought into contact with an end surface of the piston 16. The valve seat fixing member 14 is provided with flow path holes 43 which put a valve system accommodating section in communication with the pressure reducing chamber 92. |
