Sealing valve

A sealing valve arrangement (12) is provided for a container containing a fluid, with a support element (14) having a control channel (15) in the peripheral region of the support element (14) and a securing element (16) with a passage channel (18) arranged one above the other over its fluid receiving space (13'). Between the support element (14) and the securing element (17), a sealing valve (1) with a smaller radial extension compared to these elements (14, 16) and with a valve channel (2) for connecting the control channel (15) and the passage channel (18) is provided, wherein the sealing valve (1) has a first sealing surface or edge (5) for sealing the passage channel (18) against the control channel (15) and a second sealing surface or edge (8) for sealing the valve channel (2) against the control channel (15). A valve function can be assumed by the sealing valve (1) in the event of overpressure and underpressure within the fluid receiving space (13').