Filling and emptying device for a pressurised container

摘要

The invention proposes a filling and emptying device for pressurised containers in which arranged on a valve connecting stub (3) of a valve (1) connected to the pressurised container is a pressure-maintaining device which has a magnetically operable shut-off element (6) that prevents outflow of the contents of the container and filling of the container when the internal pressure in the container is lower than a particular value and the valve slide (4) is open. To unlock the pressure-maintaining device, a connecting piece (10) which can be screwed onto the valve connecting stub (3) and contains a magnetic opening element (14) is provided. This makes it possible to ensure that the pressurised container can only be filled with the substances for which it is intended and prevents complete emptying without the appropriate connecting piece. <IMAGE>