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  1. Andresmrj

    Lip-seal for body seal (Trunnion 3 piecies ball valve)

    I have been facing problems with 10in 2500# trunnion ball valve with unacceptable external process fluid leakage. The reason was the lip-seal that seals between body parts. In fact there is no visual indication of gap extrusion and it looks like it collapse in the opposite pressure direction...

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