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  1. JustABallValve

    Cryogenic Testing Of Trunnion Ball Valves

    I am interested to hear anybody experience with cryogenic testing of TMBV at -325F, per BS6364. The main issue i see if the valves holding the allowable leakage thru the multiple cycles at incremental pressure the test ask for.
  2. JustABallValve

    Valve Differential Pressure On Trunnion Mounted Ball Valve

    A customer is reporting issues with operations of a BV, they have a differential pressure of about 120 PSI between the 2 seats. 1220&1100 PSI. Should the published torques be increased when both seats are pressurized as appose to only 1 seat?

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