Effective January 1, 2019, Aquatic Adventures will no longer support old aluminum cylinders manufactured prior to 1989. Support for these cylinders will sunset as follows:
Policies noted above have been instituted for the safety of our customers and for our fill station operators as these cylinders have been known to rupture. Increased regulations regarding these cylinders have caused our hydrostatic testers to discontinue providing Eddy-current testing effective January 1, 2019. Since companies like Luxfer who constructed aluminum cylinders of 6351 alloy prior to 1989 are recommending these cylinders must have an Eddy-current test annually, it is no longer feasible to continue supporting these older cylinders.
Only aluminum cylinders constructed prior to January 1, 1989, are impacted by this change in support. Older steel cylinders are not impacted. Most of these cylinders were made by Luxfer. However, many of the Luxfer cylinders were distributed under US Divers, Dacor and other equipment manufacturer's names.
You can identify your cylinder as a Luxfer cylinder regardless of the decals on your tank by looking for these marks:
Note that even though the tank on the right is marked with the manufacturer stamp of US Divers (USD), both cylinders have the Luxfer arrow in the original hydrostatic date stamp.