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  • Users: Gray76
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  1. Gray76

    Trunnion Ball Valve - Fire Safe Seat Design

    Hi, Many trunnion ball valve manufacturers show a fire safe graphite seal located in a closed groove on the trunnion seat carrier. As this is a closed groove, the graphite will have to be split/scarfed in order to fit. Maybe die formed ring or braided packing section. Does anyone know how this...
  2. Gray76

    Spherical Datum

    Hi All, https://files.engineering.com/getfile.aspx?folder=c66ceef3-070b-44d2-b455-30a6d88222a7&file=BALL.pdf I'm looking for some help on the component sketch above. Over the years I've seen many different approaches and would like to finally bottom the issue. The component is a trunnion valve...

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