Valve unit for controlling flow of fluid in fluid-control working apparatus, has safety valve that is designed as shutoff valve in inlet portion of working channel, such that valve element is switched into passage position

摘要

The valve unit (2) has a control terminal (21) that is provided for applying an external control signal, in order to switch a valve member into passage position by overcoming a spring unit into a working channel. A manual ventilation valve (7) is provided for performing manual ventilation of an outlet portion. A safety valve (5) is designed as pressure uncontrollable shutoff valve in an inlet portion of the working channel, such that the valve element is switched into the passage position by applying the external control signal.