Pushbutton mechanism for multi-measure controlling a feeder valve

Pushbutton mechanism for multi-measure controlling a feeder value, the mechanism comprises a lower part and a cover which are connected to each other and together constitute a house;

• a push bar being in contact with the cover and passing through an opening in the lower part and protruding out from that;
• an activation surface being on the cover;
• a biasing spring between the cover and the lower part providing mechanic bias at the initial position of the pushbutton mechanism;
• and the cover is able to move from its initial position when approaching relatively to the lower part in response to an external pressing force, wherein the cover is formed as a single piece and is attached to the lower part so that it is movable to angled positions compared to its initial position, the push bar is in an asymmetric arrangement in relation to the biasing spring, and the actual angled position of the cover and thus that part of the displaced push bar protruding out of the lower part is depending on the point of exertion the pressing force within the activation surface.