Low Leakage Valves for Long Duration Missions

Robert Walker

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NASA NTRS · 20220018966

Low Leakage Valves for Long Duration Missions

Robert Walker

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Abstract

This paper presents a status update on the low leakage cryogenic test valves currently under development at NASA’s Marshall Space Flight Center. These valves consist of a 3-inch isolation valve, a 3-inch relief valve, and an 8-inch pre-valve. Each of these valves contain a self-aligning seat and poppet design to significantly reduce the quantity of propellant flowing past the seat when the valve is in its closed state (internal leakage). This self-aligning design utilizes a metallic poppet head with five degrees of freedom and is intended to allow a valve to be more tolerant of the imperfect contacts and misalignments that are commonly found between sealing surfaces. This paper covers the test articles, facilities, objectives, and preliminary results.

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BibTeX RIS

Robert Walker. 2023-01-27. Low Leakage Valves for Long Duration Missions. https://ntrs.nasa.gov/citations/20220018966

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