NASA NTRS · 19820000326
Ferrofluid Would Seal Linear-Motion Valve
Abstract
Proposed valve employs ferrofluid to make tight seal. Seal requires no precisely machined parts, and hand lapping of valve seats are unnecessary. Magnetic fluid fills gap between shaft and annular pole piece in chamber wall. Precise shaft fit is not necessary.
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Chandler, J. A.. 1983-05-01. Ferrofluid Would Seal Linear-Motion Valve. https://ntrs.nasa.gov/citations/19820000326
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