A breathing circuit is those parts of a breathing apparatus (or breathing system), which direct the flow of supplied breathing gas to, and sometimes from...

from open-circuit breathing apparatus, where the exhaled gas is discharged directly into the environment. The purpose is to extend the breathing endurance...

terrestrial/normobaric, or high altitude/hypobaric, by breathing circuit type: open, semi-closed, or closed circuit, by gas supply type: constant flow, supply on...

self-contained breathing apparatus may fall into one of three categories: open-circuit, closed-circuit, or continuous-flow. The closed-circuit type, also...

apparatus. by breathing gas source: self-contained gas supply, or remotely supplied gas, by breathing circuit type: open, semi-closed, or closed circuit, by gas...

scuba are in general use: open-circuit-demand, and rebreather. In open-circuit demand scuba, the diver expels exhaled breathing gas to the environment, and...

divers in applications where it has advantages over open circuit scuba, and surface supply of breathing gas is impracticable. The main advantages of rebreather...

from open-circuit breathing apparatus, where the exhaled gas is discharged directly into the environment. The purpose is to extend the breathing endurance...

in granular form within recirculating breathing environments like general anesthesia and its breathing circuit, submarines, rebreathers, and hyperbaric...

Dräger is a German company based in Lübeck which makes breathing and protection equipment, gas detection and analysis systems, and noninvasive patient...