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A New Superfluid Leak Tight Low Temperature Valve Using a Magnetostrictive Actuator

Published online by Cambridge University Press:  16 February 2011

Inseob Hahn ,
M. Barmatz  and
A. Clark
Inseob Hahn
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr. Pasadena, CA 91109
M. Barmatz
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr. Pasadena, CA 91109
A. Clark
Affiliation:
Clark Assoc., Adelphi, MD 20783
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Abstract

Low temperature valves play an important role in many research and development applications. Conventional low temperature valves primarily use actuation mechanisms depending on either gas or mechanical pressure. These actuation mechanisms usually require inconvenientoperating procedures such as a gas handling system or manual operation. We developed a superfluid leak tight low temperature valve that can be activated by a magnetostrictive material. All that is required to activate this magnetostrictive valve is a magnetic field produced by a simple power supply and coil. This new valve consists of separate valve and actuator units. The valve unit is designed to be normally closed using a spring. The stemof the valve is made of a hard 440c stainless steel ball while the seat uses a softer 304 stainless steel.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 360 , 1994 , 253
Copyright
Copyright © Materials Research Society 1995

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References

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