I've got a PS pump doing the pressure lube on my metal shaper, at 10 psi.You can make that work. The pump can be modified to as low as a pressure as you like. I had one modified to be the recirculation pump for an air to water intercooler on a VR6.
You running coolant through one? Seems kinda odd, but if it lives, who's to say...
Not 1500 psi inlet pressure, but case pressure. "Inlet pressure" in this hypothetical pump could just be a return line to the tank.Thanks for the link.
The issue with running an inlet pressure higher than 13 or so psi is that, at least in Cummins VE pumps, it will blow out the input shaft seal.
Maybe some machine work could allow for a retaining ring or plate of some sort?
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