Nitrous Purge Valve Kit 4an w/Poly Line

The Nitrous Purge Valve Kit 4AN w/Poly Line from Nitrous Express is purpose-built for serious nitrous oxide system tuning and maintenance. Designed for experienced nitrous enthusiasts and professional tuners, this purge kit allows you to safely vent excess nitrous pressure from your fuel lines before launch, eliminating fuel stumble and ensuring consistent performance at the starting line. The 4 AN thread configuration makes it compatible with modern high-flow nitrous plumbing systems used in street, strip, and competition applications.

This kit features precision solenoid-actuated purging with a convenient push-button activation switch, allowing drivers to command the purge manually or integrate it into sequential fuel system logic. The included 4 AN poly line tubing offers superior durability and resistance to nitrous crystallization compared to standard rubber hose, while maintaining full compatibility with 4 AN compression fittings found on most modern fuel rail and nitrous delivery systems. The solenoid design ensures rapid venting cycles without pressure loss or backflow, critical for maintaining consistent nitrous staging and launch conditions across multiple passes.

Ideal for turbocharged and naturally aspirated vehicles running direct-port or plate-style nitrous systems, the Nitrous Purge Valve Kit 4AN w/Poly Line integrates seamlessly into existing fuel system architectures without requiring extensive modifications. Installation demands basic mechanical knowledge and familiarity with AN plumbing standards; mounting locations vary depending on fuel rail geometry and system layout. This purge kit is essential for any vehicle stepping beyond basic nitrous oxide application into serious tuning territory, where fuel staging precision directly impacts power delivery and engine safety.