advanced beneath it a second device feeds a thick particulate liquid mixture via a conduit to the first device and the third device feeds a thin liquid via a conduit to the first device a liquid supply port is disposed peripherally in the cylinder of the first device and is swept by the piston thereof and a conduit in continuous communication with the port extends through the piston to a lower axial end of the piston application_number US 15924388 A description referring to fig1 to 5 the apparatus is for filling a container 1 with a thick particulate liquid mixture and with a thin liquid for example such as disclosed in our co pending british patent application 8631049 the mixture can be a liquid containing vegetable pieces and the thin liquid can be a water like sauce the mixture and the liquid are filled into the container 1 by a piston and cylinder device 2 whereof the internal peripheral surface of the cylinder is formed with a mixture inlet port 3 and a liquid inlet port 4 the port 3 is connected via a conduit 5 to a piston and cylinder device 6 which acts as a dosing device for the mixture the mixture is supplied to the device 6 via a rotary plug valve 7 the port 4 is connected via a conduit 8 and a two way rotary plug valve 9 to a piston and cylinder device 10 serving as a dosing device for.