Cyl-Tec 20 lb Tank - Cylinder, CGA 320 valve and siphon tube Ships ready to fill (empty). Federal law requires that the tank ship unfilled. Siphon tube is great for any application where liquid CO2 is needed Certified for use in the U.S.(DOT) and Canada (T.C.). The tank is stamped with these markings. 1800 PSI service pressure Made from high quality 6061-T6 brushed aluminum to ensure durability. Aluminum tanks will not rust as steel tanks do over time Includes durable carry handle to make transportation easier. Also includes new brass CGA 320 CO2 valve. 320 valves are approved by the Compressed Gas Association (CGA) and have a male thread for CO2 regulators. Please note only ONE valve is included with the package.