Patent ID: 7156364
Filing Date: 2007-01-02
Classification: F16K

Abstract:
1. A valve assembly for controlling flow of a cryogenic fluid, comprising: a valve assembly platform; a valve housing disposed on a top surface of the valve assembly platform, wherein a cryogenic fluid inlet orifice is disposed on the valve housing above the top surface of the valve assembly platform and wherein a cryogenic fluid outlet orifice is disposed on the valve housing at an under surface of the valve assembly platform, a valve member supported at the valve housing for movement between a cryogenic fluid outlet orifice open position and a cryogenic fluid outlet orifice closed position, a pneumatic cylinder disposed on the top surface of the valve assembly platform and laterally spaced from the valve member and thermally isolated with respect to a cryogenic fluid controlled by the valve member, a lever operatively connecting the pneumatic cylinder with the valve member, and a linkage pivotally connected with the lever at a position spaced from the valve member.