| 主权项 |
1. A flow regulating valve subassembly, comprising:
a housing having a valve seat, the housing including a first working connection and a second working connection that are connectable to one another via the valve seat on the housing; a valve piston linearly movably accommodated in the housing, the valve piston being acted upon (i) via a first end face by the pressure of the first working connection in the opening direction, (ii) via an annular surface by the pressure of the second working connection in the opening direction, and (iii) via a second end face by the pressure of the higher-pressure working connection in the closing direction, the second end face and the housing delimiting a valve space; an adjustable throttle formed by the housing and the valve piston, the adjustable throttle having a cross section that changes continuously during displacement of the valve piston, the higher-pressure working connection being connected to the valve space via the throttle; and a pilot control valve arrangement arranged in a control line connecting the valve space to the lower-pressure working connection, wherein the pilot control valve arrangement has a fixed displacement diaphragm and a continuously adjustable 2/2-way valve with a valve body, the valve body (i) being acted upon in the closing direction by a control pressure, picked off upstream of the fixed displacement diaphragm, of the control line, (ii) being acted upon in the opening direction by an actuator and by a control pressure, picked off downstream of the fixed displacement diaphragm, of the control line, and (iii) having a position configured to be detected via a position detection mechanism. |
