The Nitrous Express Lightning 500 bottle valve for 12 lb bottles is a billet aluminum, high-flow bottle valve pressure tested to over 10,000 PSI. Based on the Lightning 45 design, it outflows many conventional valves by a factor of four to reduce restriction in nitrous systems and retrofits to most brand systems; this product is not compatible with the NX DF 500 valve.
Nitrous Express Lightning 500 Bottle Valve (Fits 12lb Bottles)