| 摘要 |
A pressure regulator, including a housing; a piston axially movably disposed in the housing; a high-pressure chamber; a low-pressure chamber; a regulated-pressure chamber whose pressure biases the piston in a first direction in an axial direction of the housing; a first pilot chamber whose pressure biases the piston in a second direction opposite to the first direction; a second pilot chamber whose pressure biases the piston in the second direction; and a valve mechanism configured such that, by a movement of the piston in the second direction, communication between the regulated-pressure chamber and the high-pressure chamber is permitted while communication between the regulated-pressure chamber and the low-pressure chamber is shut off and such that, by a movement of the piston in the first direction, the communication between the regulated-pressure chamber and the high-pressure chamber is shut off while the communication between the regulated-pressure chamber and the low-pressure chamber is permitted. |
