NOS Nitrous Bottle Purge Valve Kits

NOS Nitrous Bottle Purge Valve Kits are engineered to eliminate the performance-robbing effects of trapped air and gaseous nitrous vapor in your nitrous feed lines. By purging the line at the solenoid before activation, these kits ensure that only dense, liquid nitrous oxide reaches the engine the instant the system fires — eliminating hesitation and delivering consistent, repeatable power on every run.

Why Purging Matters:

• Eliminates vapor lag: Releases trapped air and gaseous nitrous from the feed lines prior to system activation, ensuring liquid nitrous — not vapor — is present at the solenoid inlet for maximum density and power output
• Instant nitrous delivery: Eliminates the lag time caused by vapor accumulation in the supply line for immediate, full-force nitrous injection
• Improved consistency: Delivers liquid nitrous to the solenoid inlet for better run-to-run repeatability and tighter elapsed times
• System maintenance: Can also be used to safely evacuate residual nitrous from the supply line when the system is not in use

Complete, Ready-to-Install Kits:

• High-pressure purge solenoid rated for demanding nitrous service
• Inline nitrous filter to protect downstream system components
• Push button activation switch for driver-controlled, on-demand purging
• AN fittings and pre-wired wiring harness for straightforward installation
• Professional installation instructions included

NOS Quality and Heritage:

NOS (Nitrous Oxide Systems) is the most recognized and trusted name in nitrous performance, with decades of experience powering racers at every level of competition. Nitrous Oxide Systems has powered more racers than any other brand of nitrous — from stock street engines to all-out race vehicles. NOS Purge Valve Kits are engineered to integrate seamlessly with NOS nitrous systems and are compatible with virtually any nitrous application, built to withstand the high-pressure demands and extreme conditions of performance and racing environments.

Multiple variants are available across this product line to match your existing system plumbing and installation requirements. Whether you're chasing consistent bracket times or simply want the sharpest possible throttle response from your nitrous system, NOS Purge Valve Kits deliver the professional-grade reliability that racers trust.