Dosing device for a liquid supply with neck

A dosing device for a neck for pouring defined doses from a container or hose, consisting of a spout attachment that can be screwed or pushed onto the neck, and that optionally can be closed with a separate lid and has a dosing control chamber (14) with variable volume, which during pouring is filled from empty to full, wherein said dosing control chamber (14) is formed by the space between a control chamber limiter (31) and the interior of a dosing piston (10), and wherein the dosing control chamber (14) is filled when pouring a dose, and wherein the dosing piston (10) closes the spout (3) when the control chamber (14) is full, characterized in that the control chamber limiter (31) is axially displaceable in its position, that the dosing quantities to be poured can be adjusted by the control chamber limited (31) in that the path of the dosing piston (10) can be limited on its side facing the container or hose, in that a spindle (6) is rotatably mounted in the dosing device in an axial spindle socket (2) and has a rotary knob (8) at the top, which at the front sealingly protrudes from the dosing device, and that the spindle (6) thread engages with its end region in the threaded portions (33) inside an adjustment sleeve (30) and the adjustment sleeve (30) is connected outside with a control chamber limiter (31) so that upon rotation of the spindle (6) the control chamber limiter (31) is axially displaceable in its position and thus the position of the dosing piston (10) for starting the pouring of a dose in each setting position may be limited, so that the path of the dosing piston (10) and thus the filling volume of the control chamber (14) is selectable.