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  2. Diving regulator - Wikipedia

    en.wikipedia.org/wiki/Diving_regulator

    Some divers install a sliding sleeve type shut-off valve between the low-pressure hose and the demand valve, so they can shut off the flow to a free-flowing second stage, usually when it ices up. This prevents the pressure relief function of the second stage, so a pressure relief valve must be fitted to the first stage to prevent the hose from ...

  3. Shutdown valve - Wikipedia

    en.wikipedia.org/wiki/Shutdown_valve

    A blowdown valve (BDV) is a type of shutdown valve designed to depressurize a pressure vessel by directing vapour to a flare, vent or blowdown stack in an emergency. BDVs fail-safe to the open position upon failure of the control system. [1] The type of valve, type of actuation and performance measurement are similar to an ESD valve.

  4. Scuba cylinder valve - Wikipedia

    en.wikipedia.org/wiki/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]

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  6. Mechanism of diving regulators - Wikipedia

    en.wikipedia.org/wiki/Mechanism_of_diving_regulators

    Some cold water scuba divers install shuttle (slide operation) type shut off valves at each second stage regulator so if the second stage freezes open, the low pressure air can be shut off to the frozen second stage allowing them to switch to the alternative second stage and abort the dive. [35]

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    www.aol.com/lifestyle/sharks-robot-vacuum-36-off...

    Even after Amazon Prime Day 2023, the Shark robot vacuum is still on sale for 60 percent off. The smart robot cleans hard floors and carpet without any help.