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  1. Dunc26

    Valve Seats

    Thanks for all the help much appreciated
  2. Dunc26

    Valve Seats

    Yes its a trunion mounted ball valve
  3. Dunc26

    Valve Seats

    I require a 6" 1500# ball valve the current datasheet specification gives the seat material as REINFORCED TEFLON(PTFE + 15% FIBER GLASS). This valve is now obsolete and I'm being offered 2 differing types of replacement. One of these has Devlon seats (from reading up I believe this is a...
  4. Dunc26

    Earthquake response - Single degree of freedom elevated mass

    Thanks guys How do I go about using the response to find the response function of an object?
  5. Dunc26

    Earthquake response - Single degree of freedom elevated mass

    Hello Don't know if this is in the right forum but I'm looking for some tips on analysis of the earthquake reponse of an elevated mass. I have the mass, the natural frequency and the damping coefficient. I am also told the ground acceleration due to the earthquake can be approximated by the...
  6. Dunc26

    Earthquake response

    Hello Don't know if this is in the right forum but I'm looking for some tips on analysis of the earthquake reponse of an elevated mass. I have the mass, the natural frequency and the damping coefficient. I am also told the ground acceleration due to the earthquake can be approximated by the...

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