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  2. Pin Index Safety System - Wikipedia

    en.wikipedia.org/wiki/Pin_Index_Safety_System

    The Pin Index Safety System ( PISS) is a means of connecting high pressure cylinders containing medical gases to a regulator or other utilization equipment. It uses geometric features on the valve and yoke to prevent mistaken use of the wrong gas. This system is widely used worldwide for anesthesia machines, portable oxygen administration sets ...

  3. Rebreather - Wikipedia

    en.wikipedia.org/wiki/Rebreather

    A rebreather is a breathing apparatus that absorbs the carbon dioxide of a user's exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the user. This differs from open-circuit breathing ...

  4. Mechanism of diving regulators - Wikipedia

    en.wikipedia.org/wiki/Mechanism_of_diving_regulators

    The mechanism of diving regulators is the arrangement of components and function of gas pressure regulators used in the systems which supply breathing gases for underwater diving. Both free-flow and demand regulators use mechanical feedback of the downstream pressure to control the opening of a valve which controls gas flow from the upstream ...

  5. Diving regulator - Wikipedia

    en.wikipedia.org/wiki/Diving_regulator

    Diving regulator: The most familiar type is the single-hose open circuit scuba regulator, with first and second stages, low pressure inflator hose and submersible pressure gauge. Other names. Demand valve. Uses. Reduces pressurized breathing gas to ambient pressure and delivers it to the diver. Inventor.

  6. Scuba cylinder valve - Wikipedia

    en.wikipedia.org/wiki/Scuba_cylinder_valve

    Scuba cylinder valve. A scuba cylinder valve or pillar valve is a high pressure manually operated screw-down shut off valve fitted to the neck of a scuba cylinder to control breathing gas flow to and from the pressure vessel and to provide a connection with the scuba regulator or filling whip. [1] Cylinder valves are usually machined from brass ...

  7. Self-contained breathing apparatus - Wikipedia

    en.wikipedia.org/wiki/Self-contained_breathing...

    t. e. A self-contained breathing apparatus ( SCBA) is a respirator worn to provide an autonomous supply of breathable gas in an atmosphere that is immediately dangerous to life or health from a gas cylinder. [ 1] They are typically used in firefighting and industry. The term self-contained means that the SCBA is not dependent on a remote supply ...

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