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...

Valving of SCUBA (Air) Cylinders

Catalina Cylinders recommends that anyone valving SCUBA (air) cylinders should be aware of the hazards associated with high pressure compressed air and be trained in safe practices of valving SCUBA cylinders. Catalina Cylinders has compiled the list of items below...

Serial Number Prefixes of SCUBA Cylinders

US / Canadian Cylinders Note: The current serial number prefix system was implemented in 1993. Cylinders manufactured prior to September 1993 did not have serial number prefixes specific to the different cylinder types. The serial number prefixes of these cylinders...

Requalification (retesting) of DOT-SP 12079 Steel SCUBA Cylinders

The retest pressure is 5250psi for all SP 12079 steel SCUBA cylinders. All Department of Transportation (DOT) Special Permit (SP) 12079 steel SCUBA cylinders must be requalified at a retest pressure equal to 3/2 (1.5) times the design service pressure of the cylinder....

Oxygen Compatibility in SCUBA Cylinders

PLEASE NOTE: This document only applies to Catalina Cylinders, new and used, SCUBA cylinders and in no way is meant to apply to the SCUBA cylinders manufactured by different entities. Prior to June 2006, Catalina Cylinders SCUBA cylinders, as-manufactured, were not...