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  1. pvvgnl

    metal to metal

    the gas is natural gas. operating temp is 62 C. Operating pressure 101 barg. Thank you in advance
  2. pvvgnl

    metal to metal

    Thanks you for your answer, gerhardl. The valve is not TSO, we thing to change it from soft seat to metal to metal. with the soft seat the valve become passing because of black powder in the gas stream. Also I want to know please if the sealant injetion will be dangerouse one we have metal to...
  3. pvvgnl

    metal to metal

    Hello, I want to know please if the metal to metal seat / ball ( ball valve) is suitable for gas service. thanks

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