Jeff Spitzer wrote:

Wschertz@aol.com wrote:

Jeff, are the pumps centrifugal or positive displacement?
Bill schertz

The flow through pumps are neither.  They have a vane type pumping action
that is like positive displacement except it leaks like hell as you add
back pressure.  The result is a flow vs. pressure curve that looks a lot
like centrifugal but flow vs. RPM is more linear.

Jeff Spitzer

 
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