| 摘要 |
<p>A fluid pressure-modulation device intended to be interposed between a hydraulic control and a corresponding receiver, comprising a first chamber connected to the control and a second chamber connected to the receiver, the chambers communicating with each other through a first passage controlled by a regulating valve and also through a second passage controlled by a normally-open isolating valve, the regulating valve being normally closed and the second passage controlled by the isolating valve being formed axially in the regulating valve.</p> |
