Making a Do-it-Yourself Jerry Can Drip Catcher


DIY drip-catcher

The previous owner of our test boat swore by using a funnel. Of course, the funnel was too small to catch nozzle leaks, reduced the flow, required holding a heavy can on a rocking deck for three minutes while the CARB can dribbled along, hoping the wind or rocking didn't move the funnel. (Sure, the flow is faster with non-CARB cans, but you had to reduce the flow for the funnel anyway.)

We tried absorbent pads, and they kept the mess localized, but fuel still soaked the gelcoat and the pads must be purchased, stored, and disposed of. The funnel had to be kept scrupulously clean-not an easy task since considering the way diesel loves to attract dirt-or else dirt would find its way into the tank. And then there is the smell of the funnel when youre done; where to store the funny-shaped thing?

For us, the solution was a custom, low-profile funnel that cannot tip, takes the full flow of the jerry can, and is not actually a funnel. We simply cut a 5-gallon bucket down to about two inches in height and installed a 1-inch through-hull at a convenient location; in use, we just drop the spill catcher into the deck fill.

The jerry can nozzle goes into the through-hull fitting, just as though it were the fill pipe, and only drips fall in the catcher. We can also line the catcher with an absorbent pad, which can be allowed to dry and be re-used many times. the through-hull forms a lip and because the jerry can spout is placed directly in the hole, the catcher does not have to be completely clean and generally will not be covered with gas or fuel during every use; that only happens if there is a spill. The inside of the through-hull fitting, however, must be kept clean.

This DIY spill-catcher is handy for refilling with the old-style jerry cans, but CARB-compliant jerry cans don’t seem to fit, and its not a good choice for the filling at a fuel dock. At the pump, this DIY funnel can make spills from overfilling worse because you can’t see whats going on in the fill pipe. In our experience, the FloTool siphon described in the accompanying article is still a better choice for preventing jerry-can spills.

Finally, this is not for gasoline; when transferring flammable liquids, all components of the fuel system must be conductive, and the through-hull fitting is not. You can substitute a bronze fitting or incorporate a wire to provide continuity.

Practical Sailor has been independently testing and reporting on marine products for serious sailors for more than 45 years. Supported entirely by subscribers, Practical Sailor accepts no advertising or any form of compensation from manufacturers whose products we test. Testing is carried out by a team of experts from a wide range of fields including marine electronics, marine safety, marine surveying, sailboat rigging, sailmaking, engineering, ocean sailing, sailboat racing, and sailboat construction and design. This diversity of expertise allows us to carry out in-depth, objective evaluation of virtually every product available to serious sailors. Practical Sailor is edited by Darrell Nicholson, a long-time liveaboard sailor and trans-Pacific cruiser with more than three decades of experience as a marine writer, photographer, boat captain, and product tester. Before taking on the editor’s position at Practical Sailor, Darrell was the editor of Offshore magazine, a boating-lifestyle magazine serving the New England area. Darrell has won multiple awards from Boating Writer’s International, including the Monk Farnham award for editorial excellence. He holds a U.S. Coast Guard 100-ton Master license and has worked as a harbor pilot and skippered a variety of commercial charter boats.


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