11-03-2017, 07:09 AM
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#5
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TrailManor Master
Join Date: Nov 2008
Location: Chicago, IL
Posts: 1,063
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Quote:
Originally Posted by Bill
A diaphragm pump (such as the Shur Flow in our TMs) has ball-on-port valves built in as part of its operation. They are not separate valves, so they are neither ahead of, nor behind, the pump mechanism, but are part of it. There is a good explanation, with a very understandable diagram, in wikipedia at
https://en.wikipedia.org/wiki/Diaphragm_pump.
Bottom line - a diaphragm pump will not permit reverse flow.
Bill |
Ah, my misunderstanding, then! Thanks for the correction! 
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2009.5 2720SL
2006 Toyota Sienna
2018 Audi Q7
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