#8 Hi-Speed Check Valve

The #8 Hi-Speed Check Valve by ENDERLE is a precision flow-control component designed for high-performance fuel and fluid systems in custom automotive and motorsport applications. This check valve prevents backflow and siphoning in pressurized systems, protecting fuel injectors, carburetors, and other sensitive engine components from damage caused by reverse pressure or gravity feed when the engine is off.

Built for racing enthusiasts and professional builders who demand reliability under extreme conditions, this valve integrates seamlessly into fuel lines and delivery systems where directional flow control is critical. The #8 Hi-Speed Check Valve features 8 AN male O-ring connections for both inlet and outlet, ensuring leak-free, vibration-resistant sealing in high-vibration environments typical of race engines and forced-induction systems. Constructed from brass, this check valve withstands fuel exposure and thermal cycling without degradation, while its internal spring-loaded poppet design opens instantly under normal flow pressure and snaps shut when pressure reverses.

This valve is ideal for carbureted race engines, fuel-injected custom builds, and auxiliary fuel system installations where preventing fuel vapor lock or carburetor overflow is critical. Its compact 1.35 × 1.1 × 3.45-inch form factor allows flexible installation in tight engine bays and fuel cell assemblies, making it a versatile choice for various applications.