40 cu ft Steel Nitrogen Argon Helium Cylinder with CGA580 Valve – Cap + Collar New 40 Steel Cylinder 40 cu ft – 1132 Liters 2015 PSI Service Pressure – 3360 PSI Test Pressure 17.3″ Height – 7″ Diameter DOT- and TC- Approved 40 cu ft Steel Nitrogen Argon Helium Cylinder with CGA580 Valve - Cap + Collar quantity Add to cart Add to Quote SKU: 40-STEEL Categories: Compressed Gas Cylinders, Nitrogen/Argon/Helium Cylinders Capacity 40 cu ft / 1132 l Diameter 7" / 177.8 mm Height 17.3" / 439 mm Material Steel Service Pressure 2015 PSI / 139 Bar