Do you own painted cylinders that are all scratched up from your diving activities? If you are looking for a cylinder that won't show wear than you are looking for a shot blast finish cylinder. Shot blast actually will give you a better air fill since it does not have a painted finish that acts like a thermos bottle. Any paint or coating over a cylinder insulates the cylinder and will hold temperature longer than a non-finished cylinder. Great size for multiple diver use when being used as a stage bottle for deep diving activities, and is also a great primary youth cylinder. Aluminum cylinders unlike steel cylinders don't rust, they oxidize. The oxidization of aluminum forms a protective coat that hinders the continuation of corrosion making aluminum cylinders less likely to be condemned due to excessive corrosion.
Catalina 45 Cubic Ft Aluminum Tank with Pro Valve, the Pro Valve is one of the highest flow cylinder valves available today and is also a convertible valve. Whether you dive Yoke or DIN regulators this valve will work for both. Valve has easily removed 200 bar (3000 psi) DIN insert to convert the valve for use with DIN regulators. Valve has a heavy duty deign with a smooth operating mechanism and multi-ported burst disc plug for added safety. When shipped the tanks valves will be removed and the tank will require re-inspection before being filled. Note: All Catalina cylinders are nitrox ready and meet certificated specifications of the US Department of Transportation (DOT) with DOT-3AL specification and Transport Canada Safety and Security (TC) with TC-3ALM specifications.