The Nitrous Express Extreme nitrous purge valve with 6AN manifold, push button and poly line is a complete purge system that includes a Lightning purge solenoid and vent tube. Removing air from nitrous plumbing allows harder launches and quicker 60-foot times and, according to the manufacturer, can shave up to two tenths off quarter-mile ETs when applied in compatible setups.
Nitrous Express Extreme Nitrous Purge Valve (6AN Manifold Push Button & Poly Line)