Patent ID: 6558539
Filing Date: 2003-05-06
Classification: B01D,G01N

Abstract:
A chromatography column having a container and a valve assembly, said valve assembly comprising:a valve assembly housing having a cavity elongated along an axis in said housing; a slurry passage having an inlet opening into said cavity and transversely oriented relative to said axis; a slurry port in communication with said cavity of the of the valve assembly housing and an interior volume of said container, said slurry passage inlet spaced a distance above said slurry port; and a hydralically operated piston located within said cavity moveable from a first position to a second position; said first position being defined such that said piston is located above the slurry inlet whereby said inlet is in communication with said interoir volume of said container and said second position being defined such that said piston is below said slurry inlet whereby said slurry inlet is closed from communication with said interior volume of said container.