Pressure maintenance valve for a fuel line

The arrangement (100) has a pressure line (103) provided with a pressure control valve (105) i.e. ball check valve, for maintaining a fuel pressure in a fuel line (101). A filling line (107) i.e. capillary line, fills the fuel line with fuel, where an inlet (111) of the pressure line is fluid-technically connected to an outlet (109) of the filling line. The filling line comprises a check valve (117) whose opening direction lies opposite to an opening direction of the pressure control valve. The filling line has an orifice element to reduce a flow cross-section of the filling line.