place in reverse order a further embodiment of a filling apparatus 50 is shown in fig6 and 7 differing mainly from the filling apparatus 10 by the provision of a separate hollow radially sealed connecting piston 51 as well as in a modified eccentric shaft 52 which is actuated by a rotary handle 53 moreover a modified filling union section 54 is provided which can be screwed into the housing 55 in order to avoid repetition a fresh description of like parts to those of the filling apparatus 10 is dispensed with and only a description of the modifications is undertaken below the filling union section 54 opens into a hollow cylindrical guide section 56 in which the connecting piston 51 is slidably guided sealed by a sealing arrangement 57 the connecting piston 51 has an insertion neck 59 and a sealing arrangement 60 in the direction of a through opening 58 formed in the housing 50 the sealing arrangement corresponding to the seals 21 and 22 of the filling apparatus 10 the connecting piston 51 has an o ring seal 61 on its rear side and a radial channel 62 leads to a pressure space 63 formed like an o ring and with a surface 64 on which the filling medium acts axially in addition a compression spring can be provided in a manner not shown in the filling union section 54 acting on the connecting piston 51 in the connecting direction furthermore an inlet filter if desired a replaceable inlet filter can be provided in or on the filling union section the eccentric shaft 52 now actuated by a handle 53 is not in this embodiment secured additionally by means of a safety pin 34.