Subject: Fuel transfer/polishing pump
From: "Doug Dotson"

I am designing a fuel polishing and transfer system. My thought
is to use valves to route fuel from any tank to any tank. No
problem with that part. I want to be able to just transfer fuel
or switch in a filter to polish the fuel while transferring. Since
I can select the same tank for source and destination, I can
polish fuel in place as well. The problem comes with the selection
of a pump. I was looking at a Groco or Jabsco pump which seems
good for transfer purposes, but way exceeds the flowrate of the
filter when polishing. A Walbro fuel pump (which I have as a priming
pump now) seems like a good fit for polishing (33 GPH) but will be slow
when just transferring fuel. What happens when a 5.5 GPM pump
(Jabsco) is pushing fuel through a filter rated at 60 GPH (RACOR 500)?

Why not just ask Racor?
http://www.parker.com/ead/cm1.asp?cmid=392

And I believe Racors are designed to be drawn through not pushed into.
Again, ask Racor.

And fuel "polishing" is a joke IMHO.
Unless the fuel in the tank/s is well stirred up all you are doing is filtering
what is already clean, settled out fuel.

Capt. Bill