Abstract: A valve for fitting to a container, in particular a bottle, in which a pressure has accrued, comprising a valve housing in which at least one valve seat is provided. A valve seat, independent of the bottle pressure is located between a piston and the bottle contents and connected to the piston, whereby the other side of the piston is pressurized by an energy store, the force of which is adjustable.

Abstract: The invention relates to a valve for fitting to a to a container, in particular a bottle, in which a pressure has accrued, comprising a valve housing (1) in which at least one valve seat (23, 24) is provided. A valve seat (23, 24), independent of the bottle pressure is located between a piston (28) and the bottle contents and connected to said piston (38), whereby the other side of said piston (28) is pressurised by an energy store (39), the force of which is adjustable. A valve for fitting to a container, in particular a bottle, in which a pressure has accrued, comprising a valve housing in which at least one valve seat is provided. A valve seat, independent of the bottle pressure is located between a piston and the bottle contents and connected to the piston, whereby the other side of the piston is pressurized by an energy store, the force of which is adjustable.

Abstract: In a milling cutter for milling work with a setting angle of preferably 90.degree., the face cutting edges (1a, 2a) and the peripheral cutting edges (1, 2) are orientated in opposite directions for the chip removal. The peripheral cutting edges (1, 2) operating in each case in the milling direction each take up half the width of the entire milling cutter, as a result of which the latter can be used as a reversible milling cutter.