rebreather

(redirected from Semi-closed circuit)
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rebreather

[rē′brēth·ər]
(engineering)
A closed-loop oxygen supply system consisting of gas supply and face mask.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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An inflating spill valve for controlled respiration in a semi-closed circuit Br J Anaesth 1953; 32:616.
Navy Frogman BM1 Louis Kucnski (right) wears an MK V Semi-Closed Circuit Underwater Breathing Apparatus.