Actuation device for valve element produces regulating valve control signal from pressure of pressure medium regulated by regulating valve and pressure at output of secondary connection

摘要

The device moves the valve element from a position blocking a passage between primary and secondary connections to a position in which the passage is at least partly open. The pressure of a pressure medium is regulated by a regulating valve before the actuating element and is detected and fed to a control/evaluation device with the detected pressure at the output of the secondary connection to enable the valve control signal to be produced. The device moves the valve element (5) from a rest position blocking a passage between primary and secondary connections (2,3) to a working position in which the passage is at least partly open. The deflection of an actuating element (31) caused by the pressure of a pressure medium is transferred to the valve element. The pressure of the pressure medium is regulated by a regulating valve (37) before the actuating element and is detected and fed to a control/evaluation device (50) with the detected pressure at the output of the secondary connection (3) to enable the valve control signal (S) to be produced. Independent claims are also included for the following: a valve.