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Emerson Mixed-Gas Scuba: Further Preliminary Evaluation of the Flow Characteristics of the Prototype Regulator-Orifice Unit; Preliminary Evaluation of Mouthpiece, Check Valves, and Hose Assembly.
NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C
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This is the second report covering evaluation of individual components of the standard U.S.N. mixed-gas scuba. A modified gas regulator with drilled orifice is tested and found to meet specifications. The breathing bag adjustable relief valve is tested and found to meet specifications with minor modification. The mouthpiece, check valve and breathing tubes are tested for resistance drop and found to be satisfactory. Modified author abstract
APPROVED FOR PUBLIC RELEASE