Extruder and tube extruder or metal extrusion press

An extruder and tube extruder or metal extrusion press that has a press frame, comprising:

• a cylinder bar and a counter bar connected to said cylinder bar, in which a movable block receiver holder that bears a block receiver and a movable plunger traverse are provided, wherein a main cylinder or pressing cylinder is arranged in the cylinder bar, said cylinder receiving in its cylinder housing a pressing piston provided with a pressing plunger at its front end, supported by the plunger traverse, and in which an equalization container is arranged in the cylinder housing, said container supplying hydraulic oil to the pressing piston by a slide plate provided on a central linkage, wherein a filling valve that has a lid-like valve cone is formed in the transition from the equalization container to the cylinder housing, freeing up in its opening function an annular cross section adapted to the large internal diameter in the transition to the cylinder housing, wherein the central linkage is designed as a sliding guide for the slide plate, said guide being decoupled from the pressing piston, wherein the slide plate at the end away from the pressing piston is fixed to at least two slide rods, which run at a radial distance from the central linkage, and which are secured to the back end of the pressing piston, on the one hand, and to the slide plate, on the other hand, and the central linkage is connected to an actuating drive, which is arranged outside of the equalization container, and which when activated either lifts off the valve cone from its valve seat in the filling valve or retracts it into the valve seat.