The invention relates to a solenoid valve (1), in particular a shut-off valve for hydrogen tank systems, comprising a reciprocatingly movable magnetic armature (2) which is or can be coupled to a reciprocatingly movable valve element (3), the magnetic armature (2) being preloaded in the direction of the valve element (3) by means of a spring (4), the solenoid valve further comprising an annular solenoid coil (5) for acting on the magnetic armature (2), the solenoid coil (5) surrounding the magnetic armature (2) in portions. According to the invention, the magnetic armature (2) has a portion (2.1) designed as a plunger armature and a portion (2.2) designed as a flat armature, the portion (2.1) designed as a plunger armature delimiting a pressure chamber (6) within the solenoid coil (5), which pressure chamber is connected pneumatically, preferably via a choke (7), to a control chamber (8) which can be relieved by opening a control valve (9) which can also be actuated by means of the solenoid coil (5). The invention also relates to a hydrogen tank system comprising a solenoid valve (1) according to the invention.

A ceramic valve core assembly including a movable valve plate which is rotatable and slidably attached on a fixed valve plate, the fixed valve plate has a first cold water inlet, a first hot water inlet, and a first water outlet. The movable valve plate has a first water inlet and a second water outlet in communication with the first water outlet. The first water inlet includes a filter mounting cavity and a water mixing cavity in communication with each another. By rotating the movable valve plate, the first cold water inlet, the first hot water inlet, or both the first cold water inlet and the first hot water inlet establish communication with the water mixing cavity. A lower edge of the second water outlet contacts an upper edge of the first water outlet. Thus, by moving the movable valve plate, a water passage is established.