Polish Your Diesel Nonstop

Parker FPM-050 Fuel Polishing Module

Parker FPM-050 Fuel Polishing Module

Parker Hannifin has a remarkable new fuel polishing system that has been designed specifically to run nonstop, using extremely small amounts of electricity and with a design that makes it seem nearly immortal when compared to conventional pumps.

The new FPM-050 Fuel Polishing Module (click on the photo above for a larger view) consists of a state-of-the-art piezoelectric pump that uses about 2 watts to run, equivalent to 3.6 Ah/day. With such a low power draw, Parker says the unit can run continuously and unattended for extended periods of time without depleting available batteries. The system is designed to remove emulsified water from diesel fuel systems. It will filter 50 gallons of fuel a day — which at first glance seems like a fairly small quantity. But imagine how long your boat sits at the dock, between weekend cruises, or even during the off-season. In less than three weeks, it will run a typical cruiser’s 1,000 gallons of fuel through the Racor filter in the system. If installed on a new build, or after a comprehensive system and fuel tank cleaning, it should enable that system to remain pristine and free of water problems.

Parker says the design of the FPM-50’s pump eliminates many of the wear points that others typically have, “enabling owners of the FPM-050 to enjoy many years of use without seeing performance diminish over time.”  The product brochure — which you can download here — shows typical installation diagrams, both for use inline with an existing fuel system, or as a dedicated fuel polishing loop.

An available timer accessory can help you run the system on a regular schedule.  My only question about the system has to do with the advisability of running a fuel pump of any kind while the boat is unattended. I have contacted Parker and am awaiting an answer on that issue. Maybe readers have an opinion or experience with unattended fuel polishing?

Price for the full FPM-050 installation kit, including the unit and a Racor 503MA-10 filter and FPM-PTC-12-A Timer is $1,149.

Parker FPM-050

Filtration Rate 50 gallons/day
Power Requirements Less than 2 W (less than 3 A-hrs/day)
Internal Pressure Drop* Less than 0.5 psi
Voltage Requirements 10-16 VDC, 12 VDC nominal
Approx. Max. Dimension
(L x H x D)
3.87″ x 2.47″ x 2.14″ (Body)
3.87″ x 4.48″ x 2.14″ (With Bracket)
Port, Inlet & Outlet 3/8 NPTF
Port, Recirculation 1/4 NPTF
Weight Less than 2 lbs
Acceptable Fuels Diesel, Bio-diesel, Kerosene

* Internal pressure drop measured in through-flow configuration with fuel flow rate  between 5 GPH and 60GPH


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Posted by Tom

Tom Tripp is the owner of OceanLines LLC, the publisher of OceanLines and founder of Marine Science Today. He is an award-winning marine journalist, science writer and long-time public communications specialist. His PR career and much of his writing stems from the fact that he loves to explain stuff. It all began when he and his brother Mark threw all of Mom's tomatoes at the back wall of the house. . .


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Bill Parlatore

Having spent the last 15 years immersed in the evolution of fuel polishing, I don’t get this new product at all.

Bill — meaning you don’t see the need for it? Do you think it would be useful for someone who doesn’t have a dedicated fuel polishing loop already? (Ed note – Bill is the founder and Executive Editor Emeritus of Passagemaker Magazine, which pioneered a true sea change in marine journalism to the benefit of all of us who cruise and make passages at sea. He knows whereof he speaks).