NOS Nitrous Bottle Valve Blow Down Tube

The NOS Nitrous Bottle Valve Blow Down Tube line delivers a critical safety solution for any nitrous oxide system where the bottle is mounted inside the vehicle's passenger compartment. When a pressurized nitrous bottle is installed in an enclosed space, properly venting the pressure relief valve is not optional — it is a mandatory safety requirement enforced by major motorsports sanctioning bodies and an essential safeguard for driver and occupant protection.

In the event of an over-pressurization condition caused by rising ambient temperature or heat soak, these blow down tubes safely channel vented nitrous oxide to the exterior of the vehicle rather than into the cabin. Each tube mounts along the side of the nitrous bottle for a clean, unobtrusive installation that stays out of the way during competition or street use.

Key Features:

• Aerospace-grade aluminum construction for a strong, lightweight, and corrosion-resistant build
• Safely routes nitrous discharged from the blow-off cap to the outside of the vehicle during any over-pressurization event
• Mounts neatly alongside the nitrous bottle to minimize interference with surrounding components
• Required safety component for any interior nitrous bottle installation in a race or performance vehicle
• Mandated by both NHRA and IHRA when racing a vehicle equipped with a nitrous oxide system
• Compatible with NOS Racer Safety Blow-Off Adapters and Gen II and Gen III Hi-Flo and Super Hi-Flo nitrous bottle valves
• Available in multiple configurations and styles to accommodate a wide range of installation requirements

NOS has been the industry benchmark in nitrous oxide performance for decades, powering more racers than any competing brand. The blow down tube product line reflects that same commitment to precision engineering and racer safety — delivering a reliable, sanctioning body-compliant venting solution for dedicated race builds and high-performance street machines alike.