Valve

A valve, comprising:

• at least one first valve chamber having an inlet opening for feed of a medium and a valve opening;
• an energy accumulator having a spring constant for creating a spring force;
• a valve body movable to open and close the valve opening, the valve body being acted upon by the spring force acting in a closing direction of the valve body;
• an actuating element configured to receive an actuating force which acts against the spring force;
• and
• means for adjusting the spring constant, said adjusting means being effective at the point of action of the actuating force;
• wherein the energy accumulator comprises a leaf spring which is clamped on one side and acts with the spring force upon the valve body at an end disposed opposite the clamping point, and wherein a distance between the clamping point and another point at which the leaf spring acts with the spring force upon the valve body is moveable along a path of the leaf spring.

A valve, comprising:

• at least one first valve chamber having an inlet opening for feed of a medium and a valve opening;
• an energy accumulator having a spring constant for creating a spring force;
• a valve body movable to open and close the valve opening, the valve body being acted upon by the spring force in a closing direction of the valve body;
• and
• an actuating element configured to receive an actuating force which acts against the spring force;
• means for adjusting the spring constant, said adjusting means being effective at the point of action of the actuating force;
• wherein the energy accumulator comprises a leaf spring which rests at its center region on a support located at a support point, at one end abuts against an abutment and at another end which is disposed opposite to the abutment acts with the spring force upon the valve body, and wherein the abutment is movable along the leaf spring.

A valve, comprising:

• at least one first valve chamber having an inlet opening for feed of a medium and a valve opening;
• an energy accumulator having a spring constant for creating a spring force;
• a valve body movable to open and close the valve opening, the valve body being acted upon by the spring force in a closing direction of the valve body;
• an actuating element configured to receive an actuating force which acts against the spring force;
• means for adjusting the spring constant, said adjusting means being effective at the point of action of the actuating force;
• and
• a rocker, which is pivotable about a pivot axis, arranged between the actuating element and the energy accumulator;
• wherein the pivot axis of the rocker is movable along a path of the rocker, and the rocker is mounted on a pedestal, and wherein at least one of the pedestal and the energy accumulator is arranged on an inclined plane along which the wherein at least one of the pedestal and the energy accumulator is movable.