Attwood 9300FDV7 Fuel Demand Valve
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Attwood 9300FDV7 Fuel Demand Valve is an in-line marine fuel valve designed to help prevent engine flooding and reduce fuel spillage by keeping pressurized fuel at the tank and allowing fuel to flow only when demanded during start-up or engine operation.
Key Features
- Helps prevent engine flooding and fuel spillage associated with pressurized fuel reaching the engine
- Allows fuel to flow based on engine demand (helps avoid a pressurized “slug” reaching the engine)
- Compatible with ethanol blended fuels
- Built-in manual override
- In-line design installs between the fuel tank and the primer bulb
- Composite construction designed for harsh marine environments
- Supports fuel hose sizes 5/16"–3/8" (8 mm–10 mm)
Intended Use
- Portable marine fuel systems
- In-line fuel connections between the fuel tank and the primer bulb (fuel demand valve placement)
- Fuel lines for marine engines requiring an EPA/CARB portable fuel component solution (as applicable to your system)
Product Details
- SKU: 23-9300FDV7
- Product: Attwood 9300FDV7 Fuel Demand Valve
- Type/description: In-Line Fuel Demand Valve (FDV)
- Installation location: between the fuel tank and the primer bulb
- Fuel hose size compatibility: 8 mm–10 mm (5/16"–3/8")
- Operating input pressure: 138 kPa (20 psi)
- Protected for pressure spike: 276 kPa (40 psi)
- Flow performance: 125 L/H (33 GPH) at <2 kPa (10" gasoline)
- Manual override: Yes
- Operating temperature: -20°C to 80°C (-4°F to 176°F)
- Storage temperature: -40°C to 80°C (-40°F to 176°F)
- UPC/GTIN (variant barcode) present in product data: 22697930071
Parts Desk Insights
Best Use Case: Use this valve in the in-line position between the fuel tank and the primer bulb to help keep pressurized fuel from reaching the engine when the engine is off or during connection changes.
Common Issues: If flow seems restricted or priming is inconsistent, confirm the valve is installed in the correct direction/line location shown for an in-line FDV, verify hose size (5/16"–3/8" / 8–10 mm), and inspect mating surfaces and any associated hose/gasket condition at the tank-to-primer connection points.
Related Products & Accessories
- Related fuel lines, hoses, and fittings - Browse the Fuel Lines & Hoses collection to match the correct hose size and connection fittings for your system.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.