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  1. cmte

    Class IV Control Valve Leakage - Only Air Measure

    I don’t found literature that said about rotameters for test of leakage in control valves Class IV. According ANSI FCI 70-2, the test must be made with compressed air or water at 50 psi. I need a test only with normal compressed air (no water) at 50 psi and ambient temperature (about 30ºC). How...

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