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Moeller 033303-10 1/4" Brass Fuel Shut-Off Valve with Anti-Siphon Protection

Manufacturer

Moeller

<p>For more than 25 years, Moeller Marine Products has established itself as the industry standard in fuel system design and construction, building a reputation on innovative engineering, quality construction, and award-winning service. The company utilizes rotational molding, blow molding, foaming, and assembly processes to create custom engineered marine products that stand out for their industry-leading quality and rock-solid durability.</p><h3>Fuel System Excellence</h3><p>As a trusted name in marine fuel containment and fuel system components, Moeller is known for durable construction and innovative design standards developed over decades, with their fuel tanks and related parts supporting a wide range of vessels from small fishing boats to larger center consoles and cruisers. Moeller's fuel tanks are constructed with durable, cross-linked polyethylene and are designed to withstand the corrosive effects of modern ethanol-blended fuels. The company's comprehensive line of <a href="/7465-moeller-permanentbelow-deck-tanks-200773">permanent and below deck fuel tanks</a> represents decades of engineering expertise, offering solutions ranging from compact low-profile designs to high-capacity systems for extended voyages.</p><h3>Marine Accessories and Equipment</h3><p>Beyond fuel containment, Moeller has expanded its product portfolio to serve the diverse needs of boaters and boat builders. Moeller products include polyethylene fuel tanks, fuel gauges, boat seating, marine spray paints, transom plugs, live wells, and more. Their <a href="/7465-moeller-bait-tanks-200125">bait tanks</a> and livewell systems keep catches fresh during fishing expeditions, while their marine seating options provide comfort and functionality on the water. The company also manufactures practical solutions like <a href="/7465-moeller-battery-boxes-trays-200139">battery boxes and trays</a> that protect electrical systems from the harsh marine environment.</p><h3>Precision Fuel Monitoring</h3><p>Accurate fuel management is critical for safe boating, and Moeller's line of <a href="/7465-moeller-gauges-sending-units-200484">gauges and sending units</a> delivers reliable monitoring in all conditions. Moeller specializes in rotationally molded fuel tanks, valves, fuel line fittings, senders, and accessories engineered to withstand marine environments and ethanol-blended fuels. These components integrate seamlessly with Moeller tank systems, providing boaters with confidence in their fuel levels and system performance.</p><h3>Built for Boaters and Builders</h3><p>Moeller serves both the aftermarket and original equipment manufacturer communities with equal dedication. The company offers custom tank design capabilities, engineering services, and technical resources that help boat builders integrate fuel systems that meet stringent safety regulations. Like all Moeller fuel tanks, their products are designed to be EPA/CARB/ABYC/NMMA compliant. For recreational boaters replacing aging equipment or upgrading their systems, Moeller provides off-the-shelf solutions backed by comprehensive technical support and a commitment to marine safety that has made them a household name at marinas and boat dealerships across North America.</p>

Part Number

033303-10
06/02/2036 6:18 PM
Sale Price

$34.94

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Usually delivered within 2 days

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Product Details

The Moeller 033303-10 is a premium marine fuel shut-off valve designed to connect two permanent fuel tanks to a single outboard motor. Constructed from forged brass for maximum durability and corrosion resistance in harsh marine environments, this 1/4-inch valve provides reliable fuel flow control and safety features essential for boat fuel systems.

Key Features:

  • Forged brass construction for long-lasting durability and corrosion resistance
  • 1/4-inch female/male NPT connections for easy installation
  • Enables switching between two permanent fuel tanks feeding a single motor
  • Built-in anti-siphon protection prevents fuel backflow and accidental drainage
  • Meets ABYC H-24 standards for marine fuel system safety
  • Suitable for gasoline and diesel fuel applications

Important: This valve is designed exclusively for marine fuel systems and must not be used in potable water systems. The anti-siphon feature ensures safe operation by preventing fuel from siphoning back through the system when the engine is not running.

Ideal for boats with dual fuel tank configurations, this shut-off valve provides convenient tank selection and enhanced safety compliance for your marine fuel system.

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