The Pure Energy 5 Year N2 Tank - 48ci 3000psi combines the latest technological advances to create the most consistent output, most user friendly system in the industry. The Aluminum bottle, consistent flow technology (CFT) piston, nickel plated naval brass bonnet and our exclusive rebuildable Pure Energy Reactor II regulator makes Pure Energy the safest rated systems in the industry. Features * Rebuildable Regulator dual locking set screws * Reactor II Regulator sets new industry standard for flow, stable pressure output, and efficiency * Lifetime Limited Warranty on Regulator * Aluminum bottle * CFT (Consistent Flow Technology) piston * Dual safety rupture plugs for both bottle and downstream safety * Micro gauge * Nickel plated brass bonnet * New V3.0 Fill Nipple provides greater longevity * 5 year retest cycle * Weighs 3.19 lbs.