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  • Users: zorans
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  1. zorans

    Metal seated ball Vvlve leak

    I have experienced following problems with 4" #1500 ball valves - metal seated, top entry, double-block-and-bleed. 4" #1500 Ball valve is with seats that are pushed by springs against the ball. In the middle of ball valve, there is 1/2" hole drilled to ball cavity in which we connected drain...

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