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  • Users: rsv
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  1. rsv

    Why use ball valves.

    I don't know whether this is a simple Q or not. Why use ball valves on Gas pipelines instead of gate & or globe valves, am I missing something? I am new to Gas pipelines having mostly worked in petrochem & powerstations where gate & globe valves are the standard for isolation because they are...
  2. rsv

    Soft seat material

    I have asked this in the Material forum but, I am not sure whether it is better to ask the Q here. Can anyone tell me what the Maximum recommended pressures & temperatures are for continuous use for the following valve (ball or butterfly) seat materials? Nylon, PTFE, RPTFE, Devlon & PEEK Are...
  3. rsv

    Resiliant Valve seat materials

    Can anyone tell me what the Maximum recommended pressures & temperatures are for continuous use for the following valve (ball or butterfly) seat materials? Nylon, PTFE, RPTFE, Devlon & PEEK Are there any pressure / temperature tables available? I know there are chemical compatability issues...

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