Perko 0540 Gas Fill/Vent f/1-1/2" Hose - Angled Neck

The Perko 0540 Gas Fill/Vent for 1-1/2" Hose with Angled Neck is a marine-grade fuel system component designed for reliable gasoline transfer and tank ventilation on boats and watercraft. This deck-mounted fill and vent assembly serves dual functionality—allowing safe fuel replenishment while maintaining proper tank pressure during operation and fuel consumption. Built to withstand the corrosive marine environment, it is essential for any vessel requiring code-compliant fuel system management and safe refueling procedures.

This assembly features a chrome-plated bronze cap paired with a black polymer body, delivering both durability and corrosion resistance in saltwater and freshwater applications. The integral tank vent incorporates a flame arrestor—a critical safety feature that prevents fuel vapors from igniting if external flames contact the vent opening—and an anti-surge valve that protects against fuel siphoning and overflow during rough water conditions. A stainless steel bead chain tethers the cap to prevent loss overboard, while the angled neck design facilitates easier deck access and hose connection for standard 1-1/2" fuel hose. The included deck plate key simplifies installation and future maintenance.

This Perko fuel fill and vent assembly is ideal for boat owners and marine technicians upgrading or replacing aging fuel system components. It accommodates 1-1/2" diameter fuel hose, a common standard on mid-size cruisers and cabin boats, and meets U.S. Coast Guard and ABYC (American Boat and Yacht Council) marine safety standards. Installation involves mounting to the deck plate and connecting to the tank's fill and vent lines; the angled neck reduces strain on hose connections in high-vibration engine compartments. Regular inspection of the flame arrestor screen and anti-surge valve ensures continued safe operation for years of dependable service.