Perko Marine Fuel Tank Vent Fitting
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Perko Marine Fuel Tank Vent Fittings: Over a Century of On-Water Safety
When it comes to keeping a boat's fuel system safe, properly vented, and compliant with federal regulations, few names carry more weight than Perko. A fifth-generation, family-owned American manufacturer with over 100 years of experience, Perko is known for its commitment to quality, innovation, and American craftsmanship. That deep heritage is evident in every component they produce — including their line of marine fuel tank vent fittings.
What Makes a Fuel Tank Vent Fitting Matter
A marine fuel tank vent fitting is a critical safety component on any gasoline- or diesel-powered vessel. It allows pressure to equalize inside the fuel tank while preventing dangerous vapor buildup and protecting the system against liquid fuel overfill, rollover events, and flame propagation. Getting this component wrong isn't just an inconvenience — it can be a serious hazard on the water.
Perko's Approach to Tank Venting
Perko offers two complementary families of tank vent hardware: hull-mounted Tank Line Vents (TLVs) and tank-mounted Tank Vent Valves (TVVs), giving boaters and builders a complete, integrated solution.
Perko's hull-side tank line vents are engineered with a removable 30-mesh stainless steel wire screen flame arrestor and chrome-plated or stainless steel bodies with polymer splash guards. The removable screen design is particularly practical: the flame-arresting screens satisfy requirements for gasoline tank applications and can be cleaned to restore maximum air flow. A locking nut with a wide flange increases bedding surface and secures the vent to the hull.
On the tank side, Perko's TVVs go beyond simple venting. Tank vent valves are designed to direct vapors generated during the diurnal cycle, with vent lines generally running to carbon canisters, and properly installed TVVs help protect canisters from liquid fuel. Perko's TVVs are sometimes referred to as rollover valves — since they offer rollover protection — and they also include an over-pressure relief feature.
Mounting flexibility is another hallmark of Perko's TVV lineup. Options include flanged mounting (matching the SAE 5-bolt level sender flange for plastic tanks), threaded mounting via 1" NPTF thread for metal tanks, and swivel mounting for both tank types — with swivel kits including the valve, valve housing, o-ring, snap ring, and tank insert.
Built to Meet the Standards That Matter
All Perko vents are designed to meet the requirements of U.S.C.G. Safety Standards for Gasoline Fuel Systems, 33 CFR 183. Perko's fuel tank vents are also designed to meet CARB and EPA requirements. This level of regulatory compliance is critical for both new boat construction and refit projects.
Perko's track record as an OEM supplier reinforces this trust: their gas tank vents are widely used by boat builders and serve as a direct OEM replacement for many applications. Today, Perko is a truly integrated manufacturer, nearly independent of outside vendors, with complete in-house capabilities from product design through manufacturing and assembly — giving them exceptional control over product quality.
Whether you're replacing a worn hull vent on an older runabout or sourcing components for a new build, Perko's marine fuel tank vent fittings represent a proven standard in on-water fuel safety. Explore the full range of marine fuel tank vent fittings or learn more about everything Perko brings to the marine hardware category.