Patent ID: 7089940

Claim:
A valve device particularly for a breathing regulator for divers, comprising an inlet chamber connectable to a source of gas under super-atmospheric pressure (P inlet ); an outlet chamber that is under a regulated pressure (P outlet ); a seating sealingly arranged between said inlet chamber and said outlet chamber, said seating including a through-passing passageway that interconnects said inlet chamber and said outlet chamber; a valve element which is movably arranged in said seating and which is adapted to open and close said passageway, said valve element being subjected to forces that include forces from said super-atmospheric and regulated pressures; and a servo element adapted to regulate said valve element, wherein said seating is movable under the influence of said super-atmospheric pressure and said regulated pressure, wherein said servo element exerts on said valve element a force that depends on the position of said movable seating, so that varying force-influenced actuation of said valve element by said super-atmospheric pressure is compensated for by a corresponding varying force from said servo element; wherein said regulated pressure is held generally constant regardless of said super-atmospheric pressure, and wherein said valve element is a ball.