Eductor assembly with dual-material eductor body
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United States of America Patent
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Aug 19, 2014
Grant Date -
Jul 20, 2006
app pub date -
Jan 19, 2006
filing date -
Jan 20, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
An improved venturi-style eductor apparatus for dispensing chemicals into a motive fluid stream where an eductor body FIG. 3 is manufactured by molding a chemically inert polymer material FIG. 2 around and inside a metallic insert FIG. 1. Opposing ends of the metallic insert may be threaded, flanged, or machined for push-in connection to facilitate mating with a motive fluid source and a dispensing device. By manufacturing an eductor assembly using a single-piece metal insert over-molded with an inert polymer provides improved chemical resistance for aggressive applications and allows improvements in venturi geometry not achievable using traditional machined components. This apparatus reduces manufacturing cost over current state-of-the-art eductor assemblies by using a single molding step to create flow-path geometry in the eductor body while retaining mechanical strength with the metallic insert FIG. 1.
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