Senior IP Gmbh

Robert M Thorne

Patrick B Reed

Peter A Jordan

Peter M Jordan

A valve assembly for high pressure applications includes a pre-charge chamber in fluid communication with a first bellows, at least one inlet for pressurized gas to enter the assembly, a system poppet and an outlet for releasing pressurized gas into a desired environment. The pre-charge chamber and first bellows are filled with pre-charge gas to a threshold pressure. Pressurized gas can flow through access channels into a second bellows, which expands to move a valve shaft connected to the poppet assembly to open the poppet and allow the release of gas. The expansion of the second bellows pushes incompressible fluid disposed between the two bellows against the first bellows, thus contracting the first bellows. The gas within each bellows maintains an internal pressure equal to the pressure exerted upon each bellows by the incompressible fluid, so as to minimize differential pressure across the bellows in the extended position.

High pressure valve assembly

A valve assembly for high pressure applications includes a pre-charge chamber, at least one inlet for pressurized gas to enter the assembly, a system poppet and an outlet for releasing pressurized gas into a desired environment. Pressurized gas can flow through access channels into a single bellows, which expands to move a shaft connected to the system poppet to open the poppet. In another embodiment, the pre-charge chamber compresses a first bellows to expand a second bellows, and vice versa upon reciprocation. The two bellows are hydraulically connected and filled with incompressible fluid. Each bellows has an internal limiting valve to retain incompressible fluid therewithin, and to preclude the complete nesting of either of the bellows. The retained fluid within the bellows maintains an internal pressure to minimize differential pressure, thereby minimizing the risk of bellows failure.

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Franklin, MA, United States of America

Robert M Thorne