Radium Duckbill Valve

Radium Duckbill Valve

This fluorosilicone duckbill valve is a one-way check valve designed to reduce fuel slosh noise and prevent fuel backflow for fire safety. Typically installed on the fuel pressure regulator return hose inside the fuel tank, it allows fuel to flow in one direction only — closing instantly to prevent reverse flow under slosh or surge conditions.

Compatible with all fuel types including E85 and all alcohol blends.

Suits: Universal — FPR return hose in-tank applications and any one-way fuel flow requirement with a 3/8" (9.5mm) ID connection

Specifications:

• Material: Fluorosilicone
• Inner diameter: 3/8" (9.5mm)
• Height: 0.89" (22.6mm)
• Opening pressure: 0-1 kPa
• Hardness: Shore A70
• Fuel compatibility: All fuel types including E85 and alcohol blends

Available Part Numbers:

• 18-0026 — Duckbill Valve, Fluorosilicone, 3/8" ID

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ Fluorosilicone construction — compatible with all fuel types including E85 and alcohol blends
• ✅ Trusted by tuners and race teams running high-power fuel system builds worldwide
• ✅ Reduces fuel slosh noise and prevents backflow for improved fire safety
• ✅ Universal 3/8" (9.5mm) ID — suits FPR return hose and in-tank one-way flow applications