Disclosed is a vacuum brake booster (10) comprising a vacuum chamber (16) and a working chamber (18) which is separated therefrom by means of a moveable wall (14).

The seawater desalination apparatus comprises a negative pressure chamber and a baffle is provided inside of the negative pressure chamber.

The present invention relates to a vacuum chamber.

The invention relates to a vacuum unit for generating a lifting stroke by means of an adjoining vacuum.

If so, the vacuum can be maintained continuously inside the vacuum chamber.

Thereafter, the vacuum chamber is once again brough back to normal pressure.

Each of the one-bottle apparatuses may have its own vacuum chamber or a plurality of microwave confinements (3) may be arranged in one common vacuum chamber.

The system includes a resin flow chamber (16) and a first chamber (14, 18), which may 'be a vacuum or pressure chamber.

The induction charge control chamber comprises a vacuum piston, a spring, and a vacuum chamber.

The top plate can be configured to be used with one or both of the first vacuum chamber and the second chamber of the vacuum manifold.

Vacuum (10) is formed at the top of the negative pressure chamber.

The antechamber (7) comprises a connection (6) for a low-pressure source, by which low pressure is produced in the antechamber (7) and in the low-pressure chamber (2).

The middle and lower section of the negative pressure chamber is divided into a fresh water chamber and a seawater chamber by the baffle.

A vacuum brake booster (10) has a vacuum chamber (16) and a working chamber (18), which is separated from the vacuum chamber in a pressure-tight manner by a moveable wall (14).

The vacuum chamber includes a vacuum outlet opening and a inlet.