| 摘要 |
<p>The present invention concerns an improvement to devices for regulating the flow and the pressure of compressed gases in order to save energy. The device according to the invention comprises a main body whose inlet nozzle is connected to a main seat on which a main valve is adapted to come to rest, said main valve being integral with a valve-chamber and being returned to its seat by means of an elastic member, a secondary valve being adapted to occupy an opening position to allow the flow of gas from the pressure user apparatus whose rate of flow is controlled by a nozzle provided in the main valve. The invention finds an application in the control of jacks.</p> |
