Flat Bottom Concave Base 12 Litre Cylinder, Beaver seamless steel cylinders are manufactured to stringent standards set by the demanding European PED specification to ensure your CE marked cylinder is allowed for use throughout the European Community - unlike other inferior designs. The body, manufactured from precision grade Steel exceeding BS 708 A 37, provides a high tensile strength and an elastic modulus that is 3 times superior to Aluminium. The cylinder is precision coated by 40µm Flame Spray Galvanising, an anti oxidising RAL 9010 precoat and a smooth, tough lacquer finish. Our cylinders are supplied O2 clean for mixed gas compatibility and ready for use with Nitrox or Trimix if assembled in an appropriate environment with O2 clean valves & equipment and are suitable for use with M25 X 2 EN-144-1 Compatible outlet valves. 12 Litre capacity with a Maximum Working Pressure of 232 Bar, providing 2784 Litres of gas when fully charged. Measure 171mm in diameter, 685 mm length and weighs approximately 14.6 Kgs when empty. Approximate Buoyancy of 1.52 Kg when empty and 4.86 Kg filled to capacity including Boot & Valve.