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 East...

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,...

Thread and neck inspection criteria for 6061 scuba cylinders

All scuba cylinders should be subjected to an annual visual inspection under normal use. A cylinder subjected to an average of one fill a day or more is considered a cylinder subjected to high use. A cylinder subjected to high use should be visually inspected, both...

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