Accession Number : AD0779182

Title :   Evaluation of the Preproduction Sample of U. S. Divers Co. Revised Two Stage Aqua-Lung Regulator ('Aqua-Master') and Improved Scuba Cylinders,

Corporate Author : NAVY EXPERIMENTAL DIVING UNIT WASHINGTON D C

Personal Author(s) : Hanger,G. W. ; Searle,W. F. , Jr

Report Date : 05 DEC 1958

Pagination or Media Count : 55

Abstract : The equipment evaluated consists of U. S. Divers Co's new two stage regulator, the 'Aqua-Master', and a pair of revised type 3000 psi aluminum cylinders, as specified by BUSHIPS, with straight thread O-ring sealing arrangement. The overall apparatus did not meet acceptance criteria; having an unacceptably high exhalation resistance as a consequence of a new design exhaust flapper valve. Substitution of the old style upper cover-exhaust valve assembly brought the resistance characteristics within specifications. The O-ring cylinder seal is basically satisfactory but not in accordance with military standards. Numerous minor mechanical deficiencies are noted for change. (Modified author abstract)

Descriptors :   *Breathing apparatus, *Diver equipment, Specifications, Performance(Engineering), Regulators, Control systems

Subject Categories : Life Support Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE