Anti-Froth Fuel Funnel – Overflow Prevention Attachment

Refueling your boat is now safer and faster with this anti-froth funnel. During normal refueling – especially with diesel – foam often forms and can surge up the filler neck, causing overflow and fuel wastage. This specialized funnel eliminates that issue. As the fuel level rises and foam begins to fill the neck, the device captures it – foam is held in the funnel’s chamber, turns back into liquid, and drains down into the tank before it ever reaches your deck. This means you can top off your tank without a drop of fuel spilled and without polluting the water.

Usage: The anti-foam attachment installs in place of your fuel cap during refueling. It’s designed to fit filler necks of Ø38 mm and Ø50 mm (the two most common deck fill sizes) thanks to its universal adapter design. When you begin filling, the funnel allows fuel to flow quickly into the tank, but as the tank gets full and foam tries to rise, it enters the funnel’s enlarged upper chamber. There, the bubbles dissipate and the fuel flows back down through specially designed openings.

Advantages: The main benefit is that you can refuel at full pump speed without repeatedly stopping the nozzle. You won’t have to wait for foam to subside. This greatly shortens the time required to fill large tanks. You also protect your boat’s paint and deck from the harsh effects of fuel – no spilled diesel to leave stains or a slippery sheen. Environmentally, you prevent fuel from accidentally spilling into the water.

Once finished, simply remove the device, tap any residual fuel back into the filler, and replace your normal cap. The funnel is easy to clean – you can rinse it with fresh water if needed. Its compact size (about 25 cm tall with a slim form) means you can store it in a locker or even keep it attached to your fuel hose as a ready-to-use accessory.

• Faster Refueling: Saves time when taking on fuel by eliminating the need for stop-and-start filling and cautious trickling at the end
• Deck Safety: Keeps people and surfaces safe from fuel gushes that can be hazardous (slippery) and difficult to clean
• Highly Portable: No moving parts and no power required – a simple mechanical solution you can carry between boats or lend to fellow boaters
• Multi-Purpose: While designed for diesel, it also works for gasoline (which can foam when filling fast) and even water tanks where overfill is undesirable
• Osculati Quality: Made by Osculati with attention to detail – durable material and a design proven to do its job effectively