Attwood Marine Anti-Siphon Valves
Attwood Marine Anti-Siphon Valves: Protecting Your Boat's Fuel System
When it comes to fuel system safety on the water, few names carry more authority than Attwood Marine. Anti-siphon valves are a critical — and often overlooked — component of any properly maintained marine fuel system, and Attwood's century-plus legacy of engineering excellence makes them a go-to choice for boaters who won't compromise on safety.
What Is an Anti-Siphon Valve and Why Does It Matter?
An anti-siphon valve sits between the fuel tank and the engine, serving as a one-way gate that prevents fuel from flowing backward or siphoning out of the tank uncontrolled. On a gasoline-powered boat, an unintended fuel siphon can flood the bilge with flammable vapors — a serious fire and explosion hazard. Installing a properly rated anti-siphon valve is not just good practice; it is required by U.S. Coast Guard (USCG) and ABYC standards on most recreational vessels.
Attwood's Approach to Anti-Siphon Valve Design
Attwood's anti-siphon valves are engineered specifically for gasoline-powered marine applications. The flagship aluminum fuel tank fitting (model 88FAS014-6) features a 1/4-in. NPT male thread x 3/8-in. barb configuration, making it a dependable, direct-fit replacement for original equipment across a wide range of boats and tank configurations. The all-aluminum construction resists corrosion in both freshwater and saltwater environments — a hallmark of Attwood's broader marine hardware philosophy.
For boats equipped with modern pressurized fuel systems, Attwood also offers the 9300FDV7 Fuel Demand Valve, which goes a step further by preventing engine flooding from pressurized fuel and eliminating fuel spray when connecting or disconnecting fittings at the engine. It is also fully compatible with ethanol-blended fuels — an increasingly important consideration for today's boaters.
Built to Standards That Matter
Every Attwood fuel system component, including their anti-siphon valves, is designed and validated against the most rigorous regulatory benchmarks in the industry. As a brand that has spent over a century earning its reputation, Attwood products are tested to USCG, ABYC, and CE standards, giving boaters confidence that what they install meets both legal requirements and real-world performance demands.
Why Choose Attwood for Anti-Siphon Valves?
- Century of marine expertise: Attwood has been engineering marine components for over 100 years and is part of the Navico Group by Brunswick.
- Corrosion-resistant aluminum construction: Ideal for the harsh marine environment, fresh or salt water.
- Ethanol-compatible: Designed to perform reliably with modern fuel blends.
- OEM-equivalent fitment: Drop-in replacement compatibility across a broad range of boat brands and tank setups.
- Regulatory compliance: Meets USCG and ABYC standards required for safe, legal operation.
Whether you are replacing a worn original-equipment valve or upgrading to a more capable fuel demand valve for a pressurized system, Attwood Marine delivers the reliability and compliance that marine fuel safety demands. Browse the full selection of Attwood anti-siphon valves and keep your fuel system — and your boat — operating safely.
