Discriminator Valve 1.5in

The Discriminator Valve 1.5in (RE185) from ATL Fuel Cells is a precision fuel system component designed for high-performance vehicle builds, motorsports applications, and custom fuel cell installations. This check valve is crucial for maintaining proper fuel delivery integrity in modified fuel systems where pressure regulation and backflow prevention are essential for engine performance and safety.

This discriminator valve ensures fuel flows in one direction only, protecting your injection system and preventing siphoning or backflow that can compromise engine tuning and reliability. Built to ATL's exacting standards, the Discriminator Valve 1.5in features a 1.5-inch port size compatible with standard fuel system plumbing. The internal check mechanism opens freely under positive pressure to allow fuel delivery to the engine while sealing instantly when reverse pressure is applied, eliminating fuel return issues.

Serious enthusiasts and professional tuners rely on the Discriminator Valve for its robust design that handles the demands of turbo, supercharged, and naturally aspirated performance engines alike. Its lightweight construction (1.58 lbs) allows for flexible mounting in engine bays where space is limited, making it an ideal choice for those optimizing complex fuel delivery setups.