An isostatic press of the kind having a pressure vessel which is relatively tall in relation to its width, the pressure vessel being adapted to be closed by a lid in order to enclose workpieces and tools together with a pressure fluid in said vessel. The pressure fluid is adapted to be pressurized after the pressure vessel has been introduced into a frame adapted to absorb forces substantially in the longitudinal direction of the vessel. The pressure vessel is disposed pivotally in relation to the frame and means are provided to produce a pivoting movement between the vessel and the frame such as to give access to the top end of the vessel.
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