into a region of the at least one hydraulic compensation opening the volume body may be immovable relative to the valve housing the actuator assembly may move along the central axis relative to the valve housing and relative to the volume body application_number US 201515031372 A description fig1 schematically shows a high pressure pump 30 including a fluid supply line 33 the fluid supply line 33 is hydraulically coupled to a cylinder chamber 31 the high pressure pump 30 furthermore has a fluid discharge line 35 the cylinder chamber 1 is arranged hydraulically between the fluid supply line 33 and the fluid discharge line 35 the high pressure pump 30 is a high pressure pump for a fuel injection system for internal combustion engines of motor vehicles a pump housing 32 of the high pressure pump 30 surrounds the cylinder chamber 1 and the fluid supply line 33 to the cylinder chamber 31 and the fluid discharge line 35 during a suction phase of the high pressure pump 30 fluid is sucked into the cylinder chamber 31 from a low pressure region through the fluid supply line 33 for example the fluid supply line 33 is hydraulically coupled by way of a pre delivery pump not explicitly illustrated to a fluid tank not explicitly illustrated in the fluid supply line 33 there is arranged a valve 1 which controls an admission of the fluid into the cylinder chamber 31 the fluid is thereupon charged in the cylinder.