Bail out press these units are used for discharging of high viscosity materials, which neither flow by gravity nor can be pumped. After mixing of the materials the vessel is brought under the pressing lid and locked into the position. The pressing lid is activated and moved downwards by a hydraulic cylinder. The pressure of the lid on the surface of the material forces the material out from the bottom discharge valve. The discharge can be synchronized with the filling head of a packing machine.