| 摘要 |
A valve, in particular proportional pressure regulating valve, having a valve piston (12) which is guided in longitudinally movable fashion in a valve housing (10) and which can be actuated by means of an operation device (14), wherein the valve housing (10) has multiple fluid ports (P, A, T) and wherein, in one movement position of the valve piston (12), a fluid-conducting connection is produced between a pressure supply port (P) and a working port (A), and in another movement position, a further fluid-conducting connection is produced between the working port (A) and a tank port (T), is distinguished by the fact that the respective pressure difference that arises between the working port (A) and the tank port (T) as flow passes through the further fluid-conducting connection acts, by way of an actuation device (30), on the valve piston (12) such that the latter passes from a stop position (32), proceeding from which the further fluid-conducting connection is substantially shut off, into a fully open opening position, in which, in relation to the stop position (32), an enlarged opening cross section from working port (A) to tank port (T) is realized. |
