Empire Aluminum 47-48/3000 Tank - High Pressure Lightweight Aluminum DOT and TC certified cylinders Made in the USA 3000 PSI fill capacity with an 800 PSI output pressure Both high and low pressure rupture disks installed for highest level of safety Empire Pure Energy Reactor Regulators are installed by qualified technicians and meet or exceed all industry standards User replaceable Nickel plated Navel Brass Bonnet providing the most durable long life gas interface available