Flow switch assembly featuring two-part base assembly with non-metallic upper part and metallic lower part
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United States of America Patent
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Jul 25, 2017
Grant Date -
Feb 12, 2015
app pub date -
Aug 6, 2014
filing date -
Aug 6, 2013
priority date (Note) -
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Abstract
A flow switch assembly features a two-part base assembly having lower and upper base parts. The lower base part is made from a metallic material, adapted on piping having a fluid flow, and configured with a central orifice to receive a paddle arm that pivots on an axis and responds to fluid flow in the piping. The upper base part is made from a non-metallic material, configured with a corresponding central orifice to receive the paddle arm, and configured with a channel to receive a pivot arm to mount and allow the paddle arm to pivot on the axis to actuate an ON/OFF switch in response to fluid flow. The non-metallic material has a lower coefficient of heat transfer than the metallic material to reduce condensation build-up in the flow switch assembly when the flow switch assembly is used in cold applications and exposed to temperatures below freezing.
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