Improvements to the Control Block of the Mark VI Mod 2 SCUBA

摘要

A program was conducted to improve certain deficiencies associated with the control block of the Mark VI Mod 2 SCUBA., a semiclosed-circuit rebreather. The areas to be improved included the bypass valve, the gas metering system, and the differential-pressure gauge. After computation of flows and laboratory testing of components and orifices was performed, a prototype embodying improvement in the problem areas was fabricated and delivered to the Navy. (Author)