Pressure medium reservoir for gas and liquid has metal bellows bag linked via spring to valve closure

摘要

A reservoir (1) holds a pressurised medium. The housing is divided into a gas-filled chamber (3) and a liquid-filled chamber (4) by a metal bellows bag (2). The second chamber may be filled with liquid via a hydraulic tube (5) and bottom valve (6). The valve also prevents total draining of liquid from the chamber (4). The valve has a closure (7) which is activated by the metal bellows bag (2). A spring (26) links the metal bellows bag (2) and valve closure (7), reducing the force between the two.