Shut-off valve, and hydrogen tank system comprising a shut-off valve

A shut-off valve (1) for hydrogen tank systems, comprising a housing (2) in which an annular solenoid (3) is accommodated for acting on a magnetic armature (4) of a control valve (5) in the form of a flat armature and a magnetic armature (6) of a main valve (7) in the form of a plunger-type armature, wherein the two magnetic armatures (4, 6) are arranged coaxially and together they border a control chamber (8) formed within the solenoid (3), which is pneumatically connected to a control valve chamber (9) on one side and to a main valve chamber (10) on the other side, and wherein at least one spring (11, 12) is accommodated in the control chamber (8) for restoring the two magnetic armatures (4, 6)

• wherein the magnetic armature (6) in the form of a plunger-type armature has a shape of a cylinder, which further features a geometry and/or an element for forming a stroke stop (16)
• wherein the stroke stop (16) is configured to be non-sealing, wherein the geometry and/or the element for forming the stroke stop (16) is a stop surface (17) facing the solenoid (3), and
• wherein the stop surface (17) comprises at least one flow channel (18) for pneumatically connecting the control chamber (8) to the main valve chamber (10).