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  • Users: Dalis
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  1. Dalis

    Inspection of a vacuum relief (Check valve)

    In my work scope (As a PSV technician) I`ve got some vacuum breakers. Acording to the work procedure, I`m supposed to test them according to API 527.. Thats not really suited for these devices, but what is the right standard to follow? The devices are normaly placed on hot water tanks (Pot...
  2. Dalis

    Test medium for Gas PSV`s. N2 or Air?

    Hi there I have a question about testing of PSV`s Right now, we use N2 as test medium on the test stand. But we are about to rebuild it, and use compressed air (Not O2!) due to the location of the test stand and dangers of suffication. I`ve heared some engineer`s concerned about the explotion...

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