Perko 2-Inch Diesel Combination Gas Fill and Vent

The Perko 2-inch diesel combination gas fill and vent combines the deck fill opening and tank vent function in one marine fitting for a compatible diesel fuel system. Integrating both functions at the fill location can simplify the exterior installation and reduce the need for a separate visible vent fitting on the hull or deck.

The 2-inch fill size is intended for a properly matched diesel fill hose, while the integrated vent path allows displaced tank air to move during refueling when the complete system is installed correctly. The combination design is especially useful where a clean exterior layout and consolidated fuel-system plumbing are priorities.

Confirm fill-hose diameter, vent-hose size, deck thickness, cap identification, mounting dimensions, and tank-system compatibility before installation. Diesel and gasoline deck fills must not be confused. Route the vent so fuel cannot become trapped in low spots, seal deck penetrations correctly, and inspect the fitting and hoses periodically for leaks or deterioration.

• The fitting consolidates two fuel-system connections at one deck location.
• An integrated vent can eliminate the need for a separate visible vent fitting.
• The vent path allows displaced air to leave the tank as diesel fuel enters.
• Correct fuel identification helps prevent dangerous misfueling.

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