The invention relates to a lifting element (2), comprising a body (4), which has at least one orifice (6) and a first fitting (8), and a flexible element (10) which hermetically seals the opening. (6) of the body (4), wherein the flexible member (10) can move between a lowered position (12) and a raised position (14) by increasing or decreasing a volume of fluid in the body connected to the flexible element, in which the fitting (8) is provided with a valve (16). Further, the invention relates to a valve element, a distributor element, an arrangement of lifting elements (40), an adjusting device (50), an adjusting assembly (60), a seat (100), a vehicle (130) and an antenna (200) provided with such a lifting element (2). (Fig. 1)
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