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Innovative, High-Pressure, Cryogenic Control Valve: Short Face-to-Face, Reduced CostA control valve that can throttle high pressure cryogenic fluid embodies several design features that distinguish it over conventional valves designed for similar applications. Field and design engineers worked together to create a valve that would simplify installation, trim changes, and maintenance, thus reducing overall cost. The seals and plug stem packing were designed to perform optimally in cryogenic temperature ranges. Unlike conventional high-pressure cryogenic valves, the trim size can be changed independent of the body. The design feature that provides flexibility for changing the trim is a split body. The body is divided into an upper and a lower section with the seat ring sandwiched in between. In order to maintain the plug stem packing at an acceptable sealing temperature during cryogenic service, heat-exchanging fins were added to the upper body section (see figure). The body is made of stainless steel.
Document ID
20040070834
Acquisition Source
Stennis Space Center
Document Type
Other - NASA Tech Brief
Authors
Wilkes, Karlin
(FlowServe Corp.)
Larsen, Ed
(FlowServe Corp.)
McCourt, Jackson
(FlowServe Corp.)
Date Acquired
August 21, 2013
Publication Date
January 1, 2004
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
SSC-00159
NASA/NP-2002-05-00019
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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