Minimum Number of Threads Required in SCUBA Cylinders

At Catalina Cylinders, the minimum number of threads required is based on information from Fed Standard H-28. Fed Standard H-28 is referenced directly in 49 CFR 178.46; DOT-3AL. The minimum number of threads required in a SCUBA cylinder with �-14 NGS threads varies...

Crown Markings of a Standard SCUBA Cylinder

The U.S. Department of Transportation (DOT) and Canada’s Transport Canada (TC) require that cylinders made in compliance to their specifications be marked on the crown with certain information. Over the years the format used by Catalina Cylinders and Catalina...

Corrosion Maintenance of SCUBA Cylinders

Catalina Cylinders recommends the following care and maintenance of SCUBA cylinder to minimize corrosion. Daily Corrosion Maintenance Never fill a cylinder with wet or contaminated air. SCUBA cylinders must be thoroughly rinsed off with fresh water after each dive...

Calculation of an Acceptable Dig (Gouge) in a S80 SCUBA Cylinder

In CGA pamphlet C-6.1, Standards for Visual Inspection of High Pressure Aluminum Compressed Gas Cylinders, it states in section 4.2 that cuts or digs are acceptable to the following limits: Unknown wall thickness, maximum dig = .031″ deep Known wall thickness,...