1/4" 2PCS Fuel One-way Check Valve, Aluminium Alloy 6mm OD Fuel Line Check Valve One Way Non Return for Diesel Gasoline Water, Black (Set of 2)

1/4" 2PCS Fuel One-way Check Valve, Aluminium Alloy 6mm OD Fuel Line Check Valve One Way Non Return for Diesel Gasoline Water, Black (Set of 2)

• 【Durable Construction】 Crafted from high-quality aluminum alloy with a 304 stainless steel spring and NBR rubber seals, this check valve ensures long-lasting performance. It resists corrosion, and operates reliably in harsh environments.
• 【One-Way Flow Control】 Designed to permit fuel flow in one direction only, this valve prevents backflow in diesel, gasoline, water, or oil systems. It safeguards your fuel system from leaks or pressure loss, enhancing safety and efficiency.
• 【Universal 6mm (1/4") Compatibility】 With a 1/4"(6mm) outer diameter, the valve fits standard fuel lines, making it ideal for carburetors and low-pressure fuel systems (0.2–6 bar / 2.9–87 psi). Includes directional markings for installation.
• 【 Multi-Fluid Versatility】 Suitable for gasoline, diesel, water, oil, and air (not for methanol or acidic/alkaline fluids). Perfect for automotive, marine, and small engine applications where reliable one-way flow is critical.
• 【2-Piece Set】Each package includes two black check valves, ready to install. (Hose clamps not included.)