Mobile phase supply device with fluidically normally closed port and cap devices

A mobile phase supply device for supplying a mobile phase for a sample separation apparatus for separating a fluidic sample, the mobile phase supply device comprising:

• a fluidically normally closed cap device mounted or configured to be mounted on a mobile phase container containing a mobile phase;
• and
• a fluidically normally closed port device configured for being mechanically connected with the cap device in such a way that, upon establishing a mechanical connection between the port device and the cap device, both the port device and the cap device are converted into a fluidically opened configuration, wherein:
• the port device comprises a face body mounted movably in a stationary carrier body and configured for being moved by a facing front of a main body of the cap device upon establishing the mechanical connection between the port device and the cap device;
• and
• the mobile phase supply device further comprises at least one of the following features:
• wherein the face body and the facing front of the main body are shaped to form one selected from the group consisting of:
• a flat face coupling;
• and a cone-type coupling;
• wherein the face body has a through hole through which a stationary pin and a movable sleeve surrounding the pin extend, wherein the sleeve is configured to move relatively to the pin upon establishing the mechanical connection between the port device and the cap device to thereby form at least part of a fluidic path in a gap between the pin and the sleeve for enabling a flow of mobile phase from the cap device to the port device along the fluidic path.