Product Pricing

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APS-6 - 6" Access Plate - 4" Cutout - Aluminum

Your Price: $176.00 Product

APS-6SS - 6" Access Plate - 4" Cutout - Stainless Steel

Your Price: $198.00 Product

APS-8 - 8" Access Plate - 6" Cutout - Aluminum

Your Price: $204.00 Product

APS-8SS - 8" Access Plate - 6" Cutout - Stainless Steel

Your Price: $229.00 Product

APS-10 - 10" Access Plate - 8" Cutout - Aluminum

Your Price: $249.00 Product

APS-10SS - 10" Access Plate - 8" Cutout - Stainless Steel

Your Price: $271.00

Creating Tank Access For Polishing Diesel Fuel
and Cleaning Storage Tanks

When a Permanent Solution for Tank Access is Required

FPS-FX System

Click on Graphic to Enlarge

View Demonstration of Installation

Tank Access Plates


6061-T6 Aircraft
(Diesel Fuel
tanks only)

304 Stainless
(Water /
Holding /
Diesel Fuel

Aluminum Tanks



Carbon Steel Tanks



Fiberglass Tanks



Iron Tanks



Monel Tanks



Poly Tanks



Stainless Steel Tanks




3/32 70-D Buna-N


Stainless Steel

Never install the Access Plate System on tanks containing gasoline or other highly flammable liquids or gasses

Additional Information

Available in
the Following Sizes

Cover Plate








Symptoms of
Bad Diesel Fuel...

  • Clogged and Slimy Filters

  • Dark, Hazy Fuel

  • Floating Debris in Tanks

  • Sludge Build-up in Tanks

  • Loss of Power and RPM

  • Excessive Exhaust Smoke

  • Corroded, Pitted Fuel Injectors

  • Foul Odor Emitting from Fuel Tank

You have experienced one or more of the symptoms of Bad Diesel Fuel, and you now recognize that the diesel fuel in the fuel tank of your marine vessel or equipment is in dire need of cleaning and the fuel, in order to be usable (and avoid the cost and hassle of disposing of a tank of diesel fuel) needs a good "Fuel Polishing". Now you need to determine if you are able to get two hoses into the tank (one suction hose and one discharge/return hose) in order to perform the tank cleaning. The size of the hoses being used on your AXI Fuel Conditioner & Tank Cleaning System may be from one inch up to three inches in diameter, depending on the rated flow capacity of the Fuel Polishing System. Some fuel fill caps may be large enough to accommodate the hoses, but some may be too small, and others may have an anti-siphon device installed at the fuel fill that prevents you from accessing your fuel tank via this route. Now what do you do?

Creating Easy Access

Sample Installation

The Seabuilt Tank Access Plates, available in 6, 8, and 10 inch cover-plate diameters and in either aluminum or stainless steel, provide an easy means to access fuel tanks. If your fuel tank has a number of baffles, as some marine and generator "belly tanks" may have, you may need to install a Tank Access between each baffle.

Installation is easy. Use the bolt ring as a template, a saber saw to cut the hole and a drill for the bolt holes. Note that minor bits of metal debris is likely to fall into the tank. This material should be suctioned out with the AXI Fuel Polishing unit prior to restoring the equipment to service.

No gasket sealer is needed. Just tighten the nuts supplied until the outer gasket is compressed and swells slightly from the edge of the outer plate, but do not over-tighten and severely distort the gasket. Make sure all surfaces are clean and dry during installation.

Sample Installation

Some of our customers have had the cover plates modified to include a suction tube welded to the cover plate that extends down to the bottom of the tank as a suction line, and a shorter return line that acts as a return line. Ball valves or Quick Connections are attached to the tubes where space allows so that the hoses from the Mobile Fuel Polishing System can be quickly attached. Permanent installation of fuel hose lines are also common for installations of FPS or STS Advanced Fuel Conditioning and Tank Cleaning Systems. The portions of tubes outside the tank may be extended from the tank access plate to a more convenient location for connection to the Fuel Polishing System hoses.

Installations of Access Plates on equipment with multiple tanks or baffles that necessitate more than one access point may be configured with a manifold to control the flow of fuel from different points to a single central FPS or STS Advanced Fuel Conditioning and Tank Cleaning System providing you with total control over the Fuel Polishing process.