Attwood Fuel Demand Valve – No Siphon Protect In-Line FDV 23-9300FDV7 for 5/16" & 3/8" Fuel Hose

Protect your engine and fuel system with the Attwood In-Line Fuel Demand Valve – No Siphon Protect (23-9300FDV7). Designed for today’s pressurized EPA-compliant fuel tanks, this FDV helps prevent engine flooding, fuel spillage, and spray while keeping your fuel delivery clean and controlled.

Prevents Flooding, Spills & Fuel Spray

Attwood’s exclusive fuel demand valve is engineered to stop pressurized fuel from reaching the engine until it’s actually needed.

• Prevents engine flooding from pressurized portable fuel tanks
• Eliminates fuel spray when connecting or disconnecting fittings at the engine
• Reduces fuel spills and helps protect against fuel-related engine damage
• Compatible with ethanol-blended fuels The valve only allows fuel to flow when demanded by the engine during start-up and operation, preventing a “slug” of pressurized fuel from surging into the system.

In-Line Installation & Hose Compatibility

Easy to integrate into existing fuel lines, this FDV installs in-line between the fuel tank and primer bulb / fuel pump.

• Compatible with 5/16" and 3/8" fuel hose (barb-to-barb design)
• 2-port design, compact and simple to plumb in-line
• Designed in partnership with OEM engine manufacturers and compatible with all major engine brands

Built for Harsh Marine Environments

Constructed from high-strength composite plastic, this valve is made to withstand heat, cold, vibration, and the demands of marine use.

• Operating temperature approx. –4°F to 176°F (–20°C to 80°C)
• Durable plastic body resists corrosion and fuel exposure

Model: 23-9300FDV7 (9300FDV7) – No Siphon Protect
UPC: 022697930071

Ideal for boats using EPA portable fuel tanks, this fuel demand valve is a smart upgrade for cleaner, safer fuel delivery.