Sorry. Poor choice of words on my part. I should have said positive displacement not fixed displacement. A variable or fixed should work as long as it is a positive displacement type of pump.

JKB,

I agree a vane pump would work. They are also a positive displacement pump. Pumps that I think would not work as well are centrifugal pumps for example.

Last edited by Bill D.; 11/25/15 01:45 PM.
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