A pneumatic valve for controlling the inflation of floatation bladders in diver-deployed underwater recovery apparatus comprises, in one embodiment, an inlet connectable to a source of pressurized air, two small semicircular flow passages joining the inlet to an outlet which connects to the bladders, a pair of spring-biased control pistons mounted in parallel in the two flow passages and another spring-biased outlet piston in a larger outlet passage positioned between the flow passages and the outlet. Air flow allowed by either of the control pistons impinges on an end of the outlet piston, displacing it from a normally closed to an open position to permit air flow through the larger outlet passage. (Author)


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    Title :

    Pneumatic Valve


    Contributors:

    Publication date :

    1978


    Size :

    11 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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